Danzhou police station can't find the address for the residence permit endorsement.

Because it has not been updated to the system.

According to the relevant information, the online self-service residence registration is based on the standard address established by the system. Since your residential address has not been updated in the system, you need to enter the residential address database in the police station in your jurisdiction. The residence permit has the identity card number of the party concerned. You can clearly indicate this person's previous place of origin.

Residence permit is an attempt made by some developed cities in China to learn from the "green card" system of developed countries, which has accumulated experience for China to formulate skilled migration measures and eventually form the national "green card" system of China.