How was Sanya's registration certificate cancelled?

Recovered by the issuing authority. If the qualification certificate is cancelled, it shall be withdrawn by the issuing authority, declared invalid and registered for the record; If it cannot be recovered, the qualification certificate will automatically become invalid. Sanya, a prefecture-level city in Hainan Province, is called Cliff for short and Yazhou in ancient times, also known as Lucheng, which is located at the southernmost tip of Hainan Island.