What clothes should I bring to Guilin in mid-April?

It's rainy weather now … it's best to wear waterproof clothes … it's about 20 degrees … I think it's enough to wear two clothes … it's enough to wear a pair of pants … it's mainly sultry and humid … it's easy to sweat when you wear it … it's easy to catch a cold when you cover it … so you should bring more clothes … because without the sun … clothes can't be dried …