Excuse me, how to go through the departure formalities and board the plane from Phuket Airport and return to China via Bangkok?

When you leave Phuket, you should go through the boarding pass at the Thai Airways counter and put the CIQ logo on your clothes. Your luggage will be checked directly back to Guangzhou, and you will go through the exit formalities at the HKT entry and exit counter. The exit card and boarding pass will be taken away by the staff at the boarding gate. When you transfer in Bangkok, follow the transfer sign to find the CIQ counter. The staff will check the passport again, then pass the security check, and then go to the boarding gate to catch the plane back to Guangzhou.