The hottest time in summer is over 30 degrees, sometimes it will be stuffy, but it will not be so humid. I don't think you should be afraid.
There is nothing to say in spring and summer, and the temperature is suitable.
Snacks are everywhere now, and the prices are not expensive. A bowl of mala Tang or rice noodles around 6 yuan. People here mainly eat stir-fry or stew. How does it taste? The dishes cooked by two people are still different. There must be some differences, depending on their preferences.
People from all over the country come here to study. Northeasters are very enthusiastic. I believe you should have no problem.
I hope you come here with enthusiasm instead of fear, and you will get different results!