Find the police station in your jurisdiction two months after the residence permit expires, bring the original ID card and the original ID card of the landlord, the rental agreement, the copy of the real estate license, and two one-inch bareheaded photos, and go through them during working hours. If the landlord can go with you, it will be done in 30 minutes. The general police station will also register the information of relatives and friends who live with you. The mobile phone number should be real.