China is known to collect large amounts of data of its citizens, including (but not only) online activities.

Now a massive dataset was leaked. And the Wall Street Journal has confirmed that at least part of it is valid and current (by contacting phone numbers listed in the set) https://www.wsj.com/articles/vast-cache-of-chinese-police-files-offered-for-sale-in-alleged-hack-11656940488

This demonstrates the risk of surveillance activities as in #Chatcontol and #DataRetentionDirective|s