Coronavirus likely will constitute a force majeure event for your Chinese counter-parties and this will mean they can breach their contracts with you without much if any legal repercussion. This also likely means some Chinese companies that are not yet truly impacted by the coronavirus will seek to use the virus as a basis for terminating or breaching or revising their contract with you.
https://www.chinalawblog.com/2020/01/chinas-coronavirus-impacts-everything-what-your-business-should-do-now.html