The places we locals in Beihai often go to are Overseas Chinese Style Street, Guangdong Road, Huhai Road and People's Cinema. Generally, it doesn't look impressive, and there are many local food stalls. You can go in and ask the price.
Then I'll tell you a quick way to identify black-hearted shops, which is to look at the price of fish in the health cabinet. The sea bass, Xiaohong and other fish in the black shop are generally above 98 kg, even 100 kg. Normal locals only drive 34 1 kg. To put it bluntly, the food stalls opened by foreigners are black shops in Beihai, and the shops opened by locals try to avoid scenic spots. In this case, the chance of being slaughtered in the north is greatly reduced.