I am going to Lushun, Dalian on April 22nd. What clothes should I wear and bring? what's the weather like?

The weather is good. If you are afraid of the cold, it is best to wear underpants and a shirt on the inside and a single layer on the outside. However, it will still be hot outside around noon. If you are not afraid of the cold, just wear a single layer and add something on top. A jacket is fine, but the weather right now is that it's warm outside and it gets cold after staying indoors for a while. If you're indoors, you should also pay attention to keeping warm.