I am an Australian who has a chinese

visa. Stuck in Kunming due to virus with sports team. Need to renew it before April 10. Can I do this in Kunming and where?

There are automatic extensions to visas for those who cannot leave due to the virus restriction. See here www.gokunming.com/[...]

All Chinese visa related issues are dealt with at the Kunming Public Security Entry-Exit Bureau on 118 Tuodong lu (Opposite the Kunming Museum).
www.gokunming.com/[...]