If you often do this or stand, I suggest you try those Jolin Tsai adjustable pants. It seems to be sold by Watsons, and it is also on Taobao.

And they are usually worn all the year round. In addition, if the weather is hot, they can be worn as cashmere pants and socks. I think it's good, but it must be expensive if it's good. But I think if it's not particularly expensive, you can find a slim figure and try it. I'm also going to save money to buy one.