For the Impression Sister Liu performance in Yangshuo, first you have to stay in Yangshuo overnight if you want to see, as it will not be finished before 20:40. Second, the procedure of purchasing the ticket for this performance is very complicated. There are two ticket offices in the park, one is at the entrance, while the other is inside the park. When you get the ticket from the entrance, you need to change it at the smaller ticket office inside park. Third, it is easily influenced by the weather, for it is the outdoor performance. Apart from these facts, I muse see the performance is fabulous!