The fourth season of the Chinese reality talent show Sing! China premiered on 19 July 2019, on Zhejiang Television. Harlem Yu returned as a coach for his third season. Na Ying, who last coached in the second season, returned with new coaches Li Ronghao and Wang Leehom, who all replaced Jay Chou, Li Jian and Nicholas Tse as coaches. On 7 October, Xing Hanming (邢晗铭) of Team Ronghao was announced as the winner of the season,^[1] making her the first female winner of Sing! China. This also marked Ronghao's first win as coach. Sidanmanchu 斯丹曼簇 of Team Na Ying, Nasi Li (李芷婷) of Team Leehom, and Chen Qinan (陈其楠) of Team Harlem finished runner-up, third, and fourth places, respectively. This marks the first instance of the Top 3 artists being all female.

Sing! China season 4 coaches

Li Ronghao

Harlem Yu

Na Ying

Wang Leehom

Colour key

Similar from the previous season, the blind auditions would see the coaches listening to the contestants' performances while they faced away from the stage. If they like what they hear from a contestant, they press the button on their chairs which would rotate them to face the stage. This signifies that the contestant has been recruited to join the respective coach's team. If more than one coach presses their button, the contestant would then choose the coach they want to work with. If none of the coaches presses their button, the losing artist would leave the stage straight away, without any conversations with the coaches, and the chairs would remain unturned (though this rule could be reversed upon request from the coaches). The performance order during the blind auditions would be decided on the spot by the coaches. The coaches would be given a list of songs which the artists would be performing, and the coaches would take turn to pick the songs which they would like to hear first, and the respective artist would be called upon the stage to perform the song. Therefore, the artists would only be notified of their performance order minutes before their performances. Before the artists perform, they would each select a coach which they would like to work with the most, and the coach's head shot would be shown in real-time on the large screen attached to their respective chairs during their performance. This allows the artists to see how their preferred coaches are reacting to their performances while the latter is facing away from the stage, thus potentially influencing the artist's final choice of coach.

In this season, a new feature named as the "mute-the-mic" button was added during the blind auditions. This allows the coaches to block one coach from pitching to an artist by having the particular coach's chair faced away from the stage and muting their personal microphone. Despite the block, the coach would still be available for selection by the artist as their coach. Unlike the previous season, there is no limit in the number of artists that can be recruited on a team.

Colour key

	Coach picked this artist to perform (via artist's song choice)
	Artist selected this coach as their preferred coach before performance
✔	Coach pressed their button
	Artist defaulted to this coach's team
	Artist elected to join this coach's team
	Artist eliminated with no coach pressing the button
✘	Coach pressed their button, but was later blocked by Ronghao from pitching to the artist
✘	Coach pressed their button, but was later blocked by Harlem from pitching to the artist
✘	Coach pressed their button, but was later blocked by Na Ying from pitching to the artist
✘	Coach pressed their button, but was later blocked by Leehom from pitching to the artist

The four coaches performed a medley of each other's songs – Li Ronghao performed Wang Leehom's "Kiss Goodbye", Wang performed Na Ying's "梦一场", Na performed Harlem Yu's "改变所有的错", and Yu performed "龙的传人". All coaches later joined forces and performed a remixed version of "龙的传人".

Order	Artist	Age	Hometown	Song	Coach's and artist's choices
					Ronghao	Harlem	Na Ying	Leehom
1	Cui Jiaying 崔佳莹	28	Langfang, Hebei	"我敢"	✔	✔	✘	✔
2	Harry Hong 洪雨雷	22	Changsha, Hunan	"模范情书"	✔	—	—	✔
3	Samingad 纪晓君	41	Beinan, Taitung	"偶然"	—	—	—	—
4	Selina Ma 马杰雪	18	Altay, Xinjiang	"太阳"	—	✔	✔	✔
5	Xing Hanming 邢晗铭	19	Wenzhou, Zhejiang	"得知平淡珍贵的一天"	✔	—	—	✔
6	Zhang Tianyu 张天予	22	Baicheng, Jilin	"想你"	✘	—	✔	✔

Order	Artist	Age	Hometown	Song	Coach's and artist's choices
					Ronghao	Harlem	Na Ying	Leehom
1	Liu Meilin 刘美麟	24	Harbin, Heilongjiang	"来不及勇敢"	—	—	—	✔
2	He Lei 何磊	19	Luzhou, Sichuan	"我们的总和"	✔	—	—	—
3	Nasi Li 李芷婷	18	Taichung, Taiwan	"你敢不敢"	—	—	✔	✔
4	Jisashama 吉萨莎玛	25	Lijiang, Yunnan	"等风来"	✔	✔	✔	✘
5	Chang Hong 常虹	32	Daqing, Heilongjiang	"下雪哈尔滨"	—	—	✔	✔
6	Sujane 以格	30	Malaysia	"Forever Love"	—	—	✔	✔
7	Liu Minxuan 刘珉轩	21	Changsha, Hunan	"肆意的河"	✔	✔	✔	✔
8	Yang Moyi 杨默依	22	Beijing	"This Is Me"	—	—	✔	✔
9	Zhang Peng 张鹏	40	Xinxiang, Henan	"大江东去"	—	✔	—	✔

Order	Artist	Age	Hometown	Song	Coach's and artist's choices
					Ronghao	Harlem	Na Ying	Leehom
1	Dora Hsu 徐丹丹1	26	Taipei, Taiwan	"忍不住想念"	✔	—	—	—
2	Jia Zheng 贾峥	21	Yixing, Jiangsu	"I Will Be Fine"	—	✔	—	✔
3	Sidanmanchu 斯丹曼簇	19	Ngawa, Sichuan	"忘我"	—	✔	✘ ✔	—
4	Li Fanyi 李凡一	19	Taizhou, Zhejiang	"踮起脚尖爱"	✔	—	✔	✔
5	Jasmyn Aisin Gioro 爱新觉罗媚	18	Manchester, United Kingdom	"中国姑娘"	—	✔	✔	—
6	Liu Jiaqi 刘佳琪	23	Shenyang, Liaoning	"也罢"	✔	✔	✔	✔
7	Cui Yi 崔一	30	Yanbian, Jilin	"远方"	✔ 2	✔ 2	✔ 2	✔
8	Kim Jin 金国宪	32	Yanbian, Jilin	"出城"	✔	—	✔	—

Order	Artist	Age	Hometown	Song	Coach's and artist's choices
					Ronghao	Harlem	Na Ying	Leehom
1	Luo Yubin 罗煜斌1	23	Puning, Jieyang, Guangdong	"我完全没有任何理由理你"	—	—	—	✔
2	Wang Wenfang 王文芳2	30	Taiyuan, Shanxi	"孤独的自由"	—	—	—	✔
3	Sun Zhenyu 孙振宇3	21	Bozhou, Anhui	"对他说我愿意"	—	—	—	✔
4	Chen Qinan 陈其楠4	20	Fuzhou, Fujian	"未来"	—	✔	—	—
5	Tian Ying 田颖5	23	Tangshan, Hebei	"寂寞难耐"	✔	—	—	—
6	Dolma Intshok 卓玛殷措	19	Kangding, Sichuan	"爱是怀疑"	—	✔	✔	—
7	Yang Yige 杨一歌	24	Shenyang, Liaoning	"小小"	—	✔	✔	—
8	Qu Yang 屈杨	29	Hohhot, Inner Mongolia	"有一种悲伤"	—	—	✔	✘ ✔
9	CPU (Flow Keyz 曾汉林 & Christy Peng 彭雅纯)	23 / 22	Australia / Wuhan, Hubei	"玫瑰玫瑰我爱你"	—	✔	—	✔
10	Xiao Qiang 肖蔷	24	Hengyang, Hunan	"无问西东"	—	—	✔	✔
11	Chen Xiaotong 陈小同	25	Shenzhen, Guangdong	"贫穷或富有"	✔	—	—	—
12	You Bowen 由博文	19	Daqing, Heilongjiang	"Simon"	✔	✔	—	✔

Order	Artist	Age	Hometown	Song	Coach's and artist's choices
					Ronghao	Harlem	Na Ying	Leehom
1	Wang Shuai 汪帅3	18	Suqian, Jiangsu	"喝酒Blues"	—	✔	—	—
2	Chen Runqiu 陈润秋3	25	Dongshan Island, Zhangzhou, Fujian	"优美的低于生活"	—	✔	—	—
3	Su Yang 苏洋3	23	Longyan, Fujian	"惯性取暖"	—	—	✔	—
4	Annabella Chua 蔡咏琪3	18	Kota Tinggi, Johor, Malaysia	"真的傻"	—	—	✔	—
5	Nicole Lai 赖淞凤3	29	Malaysia	"保留"	—	—	—	✔
6	Ji Hu 吉胡3	31	Chengdu, Sichuan	"我爱你，再见"	✔	—	—	—
7	Hu Rui 胡睿3	23	Wuhan, Hubei	"半句再见"	✔	—	—	—
8	Andy Lin 林言奕3	22	Taiwan	"美丽"	—	—	—	✔
9	Wang Xian 王弦3	29	Yinchuan, Ningxia	"她她她"	—	—	—	—
10	Zhang Ruiheng 张睿衡3	21	Jingmen, Hubei	"都是你害的"	—	—	—	—
11	Yao Fei 姚斐	41	Shanghai	"Mustang Sally"	—	✔	✔	—
12	Guo Hao 郭皓	26	Jiutai, Changchun, Jilin	"寂寞先生"	✘	✔	✔	✔
13	Tenzin Dolkar 旦增卓嘎	23	Lhasa, Tibet	"时光谣"	✔	—	✘	✔
14	Wang San 王三	45	Rizhao, Shandong	"下坠"	—	✔	—	✔
15	Luo Lei 骆蕾	24	Chengdu, Sichuan	"有一块青苔很明显"	✔	—	—	✔
16	Li Lun 李伦	25	Ludian, Zhaotong, Yunnan	"不能没有你"	—	—	✔	✔

The four mentors are divided into two groups for a duel. The teams of the two main battle instructors are divided into four or five rounds to decide the winner, with the winning team receiving one point and the losing team receiving no points. Each coach has a one-time bonus point (via the coach's trump card) that can be used on any artist on his team. If that artist who was given the coach's trump card wins the duel, he or she will receive two points, otherwise he will still not receive points. The team with the highest points wins and all of his/her artists will advance to the next card, while the losing coach will eliminate two artists from his/her team as a punishment.

In episode 8, the winning coaches from episode 6 and 7 had a duel and the same rules apply in this round.

Colour key

	Artist was given the coach's trump card
	Artist won the Cross Battle (one or two points allocated to the team)
	Artist lost the Cross Battle (no points allocated to the team)
	Team won the Cross Battles with highest winning points
✔	Artist advanced to the Cross Knockouts
✘	Artist was eliminated by coach

Episode	Coach	Order	Artist	Song	Panel votes	Coach votes				Total votes	Result
						Ronghao	Harlem	Na Ying	Leehom
Episode 6 (23 August)
	Wang Leehom	1.1	Wang Wenfang 王文芳✔	"一样的月光"	16	—	✔	✔	—	26
	Li Ronghao	1.2	Liu Jiaqi 刘佳琪✔	"散了吧"	35		—	—		35	+1
	Wang Leehom	2.1	Qu Yang 屈杨✔	"依然爱你"	40		—	✔		45	+1
	Li Ronghao	2.2	Luo Lei 骆蕾✔	"小半"	11		✔	—		16
	Li Ronghao	3.1	Li Fanyi 李凡一✔	"你的酒馆对我打了烊"	38		—	✔		43	+1
	Wang Leehom	3.2	Harry Hong 洪雨雷✔	"流星雨"	13		✔	—		18
	Wang Leehom	4.1	Nasi Li 李芷婷✔	"流沙"	32		✔	—		37	+1
	Li Ronghao	4.2	Hu Rui 胡睿✔	"爱错"	19		—	✔		24
	Li Ronghao	5.1	Xing Hanming 邢晗铭 ✔	"疯子"	32		✔	✔		42	+2
	Wang Leehom	5.2	Sujane 以格 ✔	"I'm not a star"	19		—	—		19
Episode 7 (30 August)
	Harlem Yu	1.1	Chen Qinan 陈其楠✔	"拿走了什么"	36	—	—		✔	41	+1
	Na Ying	1.2	Jasmyn Aisin Gioro 爱新觉罗媚✔	"长腿叔叔"	15	✔			—	20
	Na Ying	2.1	Jisashama 吉萨莎玛✔	"淺淺"	40	✔			—	45	+1
	Harlem Yu	2.2	Zhang Peng 张鹏✔	"离歌"	11	—			✔	16
	Harlem Yu	3.1	Wang Shuai 汪帅✔	"走钢索的人"	28	✔			✔	38	+1
	Na Ying	3.2	Annabella Chua 蔡咏琪✔	"回忆见"	23	—			—	23
	Na Ying	4.1	Sidanmanchu 斯丹曼簇✔	"我的名字"	10	—			—	10
	Harlem Yu	4.2	Jia Zheng 贾铮 ✔	"恋人未满"	41	✔			✔	51	+2
Episode 8 (6 September)
	Harlem Yu	1.1	Chen Runqiu 陈润秋✔	"都挺好"	35	—		✔	✔	45	+1
	Li Ronghao	1.2	Tian Ying 田颖✔	"大江东去"	16			—	—	16
	Li Ronghao	2.1	Liu Jiaqi 刘佳琪✔	"曲終人散"	28			—	✔	33	+1
	Harlem Yu	2.2	Zhang Peng 张鹏 ✘	"走着走着就散了"	23			✔	—	28
	Harlem Yu	3.1	Dolma Intshok 卓玛殷措✘	"星晴"	6			—	—	6
	Li Ronghao	3.2	Xing Hanming 邢晗铭 ✔	"你啊你啊"	45			✔	✔	55	+2
	Harlem Yu	4.1	Chen Qinan 陈其楠✔	"Loving you"	31			—	✔	36	+1
	Li Ronghao	4.2	Li Fanyi 李凡一✔	"亲爱的那不是爱情"	20			✔	—	25
	Harlem Yu	5.1	Yao Fei 姚斐✔	"爱上疯狂的节奏"	33			✔	✔	43	+1
	Li Ronghao	5.2	You Bowen 由博文✔	"当年情"	18			—	—	18
	Li Ronghao	6.1	Luo Lei 骆蕾✔	"野薔薇"	35			—	—	35	+1
	Harlem Yu	6.2	Chen Runqiu 陈润秋✔	"第一个清晨"	16			✔	✔	26

Before the Cross Knockout, each coach has to eliminate half of his/her teammates, which means team Ronghao, team Harlem, team Na Ying, and team Leehom will remain six, six, three, and seven artists, respectively. Besides, the "Block" is allowed for coaches in this round to avoid some artists have to compete with the strongest artist on each team. The artist will perform based on the ascending of coaches by draw, and he/she will decide his/her opponent by draw as well. If the artist is used the "Block" by the coach, which means he/she may not face a certain artist from another team by default. At the end of each Cross Knockout, the two artists will receive votes of approval from a 51-person judging panel. The artist with the most votes will advance to the Playoffs, while the other would be eliminated.

Colour key

The Top 11 performed in the Playoffs for a spot in the finals. The selection of the winner may be different, depending on which team the artist belongs to. For Team Na Ying and Team Harlem, the remaining two artists will perform a song respectively, and their coaches will choose one as their winners. For Team Ronghao, the coach assigned his teammates have a duo, and the coach has to choose one of them as a winner, which is similar to the Battles of The Voice series. For Team Leehom, since five artists advance to the Playoff, the selection of finalists is divided into two parts. Five artists will perform a solo song, and two will advance to the second round. This selection method is similar to the six-chair challenge of The X Factor series. The rule of the second round is same as Team Na Ying and Team Harlem.

The Top 4 performed live in a two-part season finale on 7 October, held at the Beijing National Stadium. In the first round of the competition, the four finalists performed a duet with their coach, and a solo song. Based on the public votes received from the live audience at the end of the first round, the bottom two artists with the fewest votes would be eliminated.

The final two artists would then sing their winner's song before an 81-person panel and live audience, who will vote for the winner at the end of the performances. Every member of the panel would be entitled to one vote, and the total number of votes received by the artists from the panel and live audience would be converted into percentage points accordingly. The artist who received the highest number of points would be announced as the winner.

The ninth episode was a two-hour special aired on 12 September, featuring performances by the coaches and artists in celebration of the Mid-Autumn Festival. The episode was hosted by Yi Yi.

The fourteenth episode was a two-hour special episode aired on 4 October, featuring performances by the coaches and artists in celebration of the National Day of the People's Republic of China. The episode was taped on 28 September 2019, at the Cotai Arena.