Functionally, it can be replaced by OneDrive, but the user experience cannot be replaced, OneDrive is too slow in China.
By the way, although Dropbox is not Google’s, considering that the subject may also need to return to China for use in other services, most of Google’s services can be replaced by Microsoft’s services in China. (Make do with it)
Search engines:
Bing Search replaces Google Search
Email, contact, calendar:
Outlook replaces Gmail and Google Calendar
Map:
The domestic part uses domestic maps, and the foreign part uses Bing Maps
Browser:
Edge Chromium replaces Google Chrome
Network disk:
OneDrive
Communication:
Skype