Are the volunteers of Jinjiang Universiade still there?

It's gone. Jinjiang refers to the World Middle School Games, sponsored by China Middle School Sports Association and Jinjiang Municipal People's Government of Fujian Province. According to the information released by Jinjiang Municipal People's Government, when the 2022 Games is over, the volunteers of the Games will leave, so they left. See official website, Jinjiang Municipal People's Government for details.