Based on the provided source material, there is no information confirming that Yisa is a city in China. The name Yisa appears primarily as a personal name associated with various individuals from Nigeria and China.
The records identify specific figures such as Yisa Braimoh, a Nigerian politician; Yisa Sofoluwe, a Nigerian football defender; and Yisa Yu, a Chinese singer. Additionally, the source mentions John Nmadu Yisa-Doko (1942–2012), who served as the Chief of Staff for the Nigerian Air Force.