Personally, I think there should be a lot of mala Tang in summer, and Korean cold noodles are also good.
When making snacks in the market, it is best to sell something that is convenient to pack, because many people who visit the market will bring something that is easy to pack and take away.
In summer, we should consider snacks with high turnover rate, because few people are willing to stand at the door or sit in the store waiting for empty tables and plates to be served, so simplicity is good.