There are two mangrove nature reserves in Shenzhen. One is in Nanshan District. The other one is in Baoan District. Baoan District is a newly built one. All kinds of supporting facilities in this southern mountain area are quite complete. It takes about an hour to finish cycling. Uh huh. So I suggest that if you want to rest and relax, you can go for a walk and stop earlier. The scenery inside is very good. You can see the bridge leading to Hong Kong on the coastal avenue. If the air is good and the weather is good, you can see some buildings in Hong Kong.