Where to download or upgrade chrome in china mainland?

Usually you could upgrade chrome directly, but not in china mainland, it’s blocked.
If your have friends outside china mainland, you could ask them download a standalone edition then send it to you.
https://www.google.com/chrome/browser/desktop/index.html?standalone=1
Or download it from mirrors:
http://getchrome.sinaapp.com/
http://buildbot.ikk.me/#download
https://gmirror.org/ (updated on 2016-12-28)
Or use opera instead.
Download from baoku.360.cn is not recommended, because you need to install 360 Security Guards to download it, after install 360 Security Guards, you would be asked to install 360 Anti-virus, 360 Mobile Assistant, 360 secure browser…