What clothes should I take to go to Phoenix and Zhangjiajie in May?

I went there last week, and it was already very hot. If I don't go for days, I'll bring one or two short sleeves and one long sleeve! Shoes, no need to bring them. Wear a pair of casual shoes and bring more socks. Do you still wear high heels when you go out to play? I advise you not to, or you will be exhausted! Remember to bring an umbrella, the temperature won't change much, but it's hard to say if it rains!