I'm going to spend 4-5 days in Weizhou Island, Chongzuo Beihai, Nanning, seeking guidance. . .

If the time is 4-5 days, then your personal suggestions for these three cities are:

1. If you prefer to go to the seaside, you can spend 4-5 days in Beihai and Weizhou Island. Weizhou Island has beautiful scenery, so I suggest you spend 2-3 days on the island, and the remaining 2 days or so in Yintan, Guantouling National Forest Park, Ocean World, Beihai City and other places.

2. If you want to go to Chongzuo to see Detian International Waterfall, you can. Detian International Waterfall takes about half a day, and you can go to the nearby Tongling Grand Canyon for half a day, and then go to Shi Ming Garden to see the pastoral scenery the next day. You can go to Nanning in the remaining three days. If the weather turns hot, consider (1) the zoo and the nearby Caribbean Water World 1 day. (2) You can also visit Kannonji in Qingxiu Mountain and soak in hot springs in Jiahe City. (3) If you like shopping, you can go to Vientiane City and Hangyang International. In the evening, you can take a walk in the nearby Wuxiang Square and Nanhu Lake to see the night view.