The proposal for dragonfly had two conditions set by the Chinese government - the first was to provide censored search results in compliance with the firewall. The second was to link search queries to user phone numbers, which a director tried to hide and many employees revolted against: https://theintercept.com/2018/09/21/google-suppresses-memo-r...

Searches would be linked to identifiable information for logged in users: https://theintercept.com/2018/09/14/google-china-prototype-l...

The Chinese government would be able to access that data through Google's joint venture partner in China who actually controls the data.