how do i add twilight 壁纸 on my laptop?

That is easy! Left click on the picture then save it. After that go to 你 壁纸 screen and click on it. Then rite click on the 照片 你 want that 你 saved. zit should work like that.... mine does all the time.

It's simple, hen 你 find the pic, right click, then press "set as background"!