Nick Carter icp

Has anyone recently flown to Thailand via China on the various Chinese airlines ? There seems to be cheap flights available with a stop over in China , but there seems to be a contradiction in flight requirements . Some sites say you need a Covid vaccination certificate and some say you just need a self test or insurance. Self tests are not dated and they aren't attached to the person , so anyone could take the test . Has anyone flown via China recently and what are the current requirements ?