Three days around the lake, the first day of the West Sea to Heima River, the second day of the Heima River to Gangcha, the third day just observed the West Sea, returned to Xining in the evening. The West Road around the lake is the most beautiful, and there are not many people. There are many people on South Road. The North Road is not by the lake and it is the most difficult. After a three-stage slope, it is a big downhill but the headwind is not much faster. Novices pay attention to the big trucks. The overall road condition is good, the cycling facilities are mature, and there are many people riding with it. The weather said that it changed. I was ready to see rain clouds from afar. I was about to catch the rain on the first day in Heima River. The next day I was about to catch two rains and hail. I remembered it deeply. Qinghai Lake is really cool in summer, and it is even a bit cold at night.