What you mean to say is that you don't know if you've had any issues,
eg
https://www.zdnet.com/article/make-s...ese-10-things/
Though I imagine that the Chinese might be less interested in what you're up to than what the British or other Governments are up to in the same way as you might be less concerned in having a Huawei phone compared to an enterprise running Huawei routers.
Zoom is, and has been for a while, insecure and not just because users haven't put in passwords. It is fundamentally insecure and the issues have only recently come to the fore with the increased popularity due to the current situation and they are (being forced) fixing it.