After the quarantine in Category C hotels, do we still need to observe at home?

No need.

For people with normal travel codes and negative nucleic acid tests, generally no measures will be taken to continue quarantine after they have been quarantined in a hotel.

Isolation in a Category C hotel for seven days is not enough. The 7 3 quarantine policy must be implemented, and the quarantine must be maintained for another three days after seven days.