Why are there armed police on Kangping Road in Shanghai?

Why are there armed police on Kangping Road in Shanghai? Because this is SW's office, we are not allowed to take pictures on this road. If you want to take pictures, armed police will stop you. Armed police are on guard 24 hours a day, and the security is extremely strict. Since then, its mystery has been handed down. Of course, if you don't take pictures on this road, you can still take pictures not far from the whole road, and the effect is still very good. This road will never be widened in Shanghai. So far, there is no bus service. No matter how fast Shanghai changes, Kangping Road should remain the same.