Zhong Yihao started his professional football career in 2015 when he was promoted to China League One side Qingdao Jonoon's first team squad.[1] On 4 April 2015, he made his senior debut in a 0–0 home draw against Nei Mongol Zhongyou, coming on as a substitute for Jorge Claros in the 82nd minute.[2][3] On 13 June 2015, he scored his first senior goal in a 2–1 away win over Shenzhen.[4] Zhong scored four goals in 21 appearances and won the Youth player of the season in the 2017 China League Two season.[5]
Zhong transferred to Chinese Super League side Guangzhou Evergrande Taobao in February 2018. On 25 April 2018, he made his debut for the club in a 1–0 away win over Yinchuan Helanshan in the 2018 Chinese FA Cup.[6] On 2 May 2018, Zhong played in another FA Cup match against Guizhou Hengfeng where he came on for Zhang Wenzhao in the 72nd minute.[7] On 20 May 2018, he made his Super League debut in a 2–0 away loss to Beijing Renhe, coming on as a substitute for Zhang Wenzhao in the 77th minute.[8] On 18 July 2018, he was sent off in the stoppage time for unsporting behaviour in his second Super League appearance against Guizhou Hengfeng.[9] He would go on to establish himself as a regular within the team and go on to win the 2019 Chinese Super League title with the club.[10]
On 25 April 2022, he joined fellow top tier club Henan Songshan Longmen (now known as Henan) for the start of the 2022 Chinese Super League.[11] This would be followed by his debut appearance for the club on 4 June 2022 in a league game against Dalian Professional in a 2-2 draw.[12] After establishing himself as an integral member of the team he would score his first goal for the club on 3 July 2022, which was in a league game against Zhejiang Professional in a 1-0 victory.[13]