I went on non-working days, so I basically didn't queue up. It takes two hours. Individual rivers will be sunbathed, and most of the time is very cool. The upper Qingxi River is not wide, the scenery on both sides of the Straits is good, it is worth experiencing. It's just that the Mekong did not explain the customs all the way, but talked about the low-level fun, so that the good experience of enjoying the scenery is greatly discounted. I hope that the scenic spot pays attention to the good scenery and the staff's words and deeds.