Am I in Henggang, Shenzhen, inside or outside the customs?

Shenzhen is now divided into six districts, four in the customs, Yantian, Luohu, Futian and Nanshan, two outside the customs, Baoan and Longgang. A long barbed wire separates Shenzhen from the outside world. There is a great difference between inside and outside, and people who work in Shenzhen are particularly aware of the difference between inside and outside. Because there are some differences in living conditions, working conditions and working treatment. Documents required for entry: Shenzhen citizen's ID card, Hong Kong resident's home visit permit or passport, foreigner's passport with visa issued by China, passport for people in other areas of China border handled by local public security bureau, and migrant workers with temporary employment permit in Shenzhen. China citizens with China passports should pay attention to the fact that not every passport can enter the customs, and they need any passport with a foreign visa to enter the customs. This is a big joke. China citizens need foreigners' permission to enter the special zone of China.