If you don't have the experience of more than 3000 meters above the plateau, it's best to eat rhodiola half a month in advance to improve the oxygen carrying capacity of red blood cells and increase the oxygen demand, and stop physical exercise half a month in advance to reduce the oxygen demand of the body. Prepare medicines: sleeping pills, painkillers, antibiotics, cold medicines, vitamin C, etc. Hat with brim, cold down jacket (to be put on while taking off), rain gear (poncho is more practical), sunglasses, sunscreen, lip balm, chocolate, snacks, etc. And mobile phones and cameras are fully charged. It is best to travel for more than 7 days, and Xining, Kangding-xinduqiao and Lijiang-Deqin are best to drive or charter for 2-3 days to adapt to the plateau climate. The best place to fly into Tibet is Linzhi, where you can stay for two days before going to Lhasa. Take a deep breath when you enter the plateau, don't run, don't jump and don't make trouble, and slow down.

I have been drunk, sleepy and dizzy for 2-5 days after coming back. I hope to adopt my personal experience.