On Feb 12, 2018, I visited 中英街. This is located in 沙頭角. This is also known as 沙頭角禁区 and we cannot enter into without permission.
Most of entrees are people from China and they come here for shopping. Although it is still part of Hong Kong, the atmosphere is like mainland China. Approximately 10K of mainly Chinese visit this place everyday for shopping. Interesting and amazing, isn’t it??