I want to open a Japanese restaurant, the scale is not about 50㎡, how much is it, and what problems should I pay attention to?

I am familiar with this one in Shenzhen. Has it been a 100 square meter store for more than ten years? It's time to make sushi. There are several sushi restaurants in Shenzhen that do well. The prospect is still considerable. For Japanese food, ask Guidola. It is the same building as our company, Block B, South Hua Ting, Bujijing.