AIUI the issue only occurs when you're browsing through tor with a browser profile that also contains logins to chinese websites linked to your identity.

This is why you shouldn't run your regular browser session through TOR for critical work and use the tor browser bundle instead, with a separate profile, with a as-paranoid-as-possible configuration (minimal cross-site requests! use µMatrix, not just noscript) if you really want to information leakage.

Tor itself can only do so much, it doesn't magically prevent your browser from telling the world that you're person X.