Is the temperature high in Chengdu or Shanghai? Where can there be fewer people? Where is a good place to play?

Is the temperature high in Chengdu or Shanghai? Where can there be fewer people? Where is a good place to play? On May Day, the temperature in Chengdu was not as high as that in the sea. There are fewer people in Chengdu than in Shanghai. Shanghai is an international metropolis suitable for shopping, while Chengdu is more suitable for leisure travel. There are too many people in Shanghai, so it is better to go to Chengdu during the May Day holiday. Going to Shanghai is: "adults look at their heads, children look at their butts". If there are too many people, you will get nothing.