Foreigners who have reached the age of 65 in Shenzhen can apply for a free bus pass. How to handle the certificate of the elderly: The applicant should bring his ID card, a copy of his household registration book (if he is not registered in Shenzhen, a copy of his residence permit) and two one-inch photos (with red background as far as possible) to the local community or sub-district office for handling. There are two kinds of certificates for registered elderly people in Shenzhen: blue certificate and yellow certificate. Blue cards are only issued to elderly women over 60 years old. The holder can enter the park in Shenzhen for free, but it is not used to take the bus for free. Yellow cards are for people over 65, who can ride and enter and leave the park for free. The processing time will take about one month.