Tibet Travel Tips
The temperature is relatively low and varies greatly between day and night in Tibet. The solar radiation is intense. Here, the types of the climate are complex. There are obvious dry season and rain season .The good seasons to enter Tibet are from May to October, and the best months are May, June, September, and October.

Bring canned oxygen and pain-killer pills you. Recommend the tablets that won’t let you feel sleepy. Move very slowly, drink more water. Keep yourself warm. Try to avoid drinking alcohol
Bring warm clothes, sleeping bag, sunglasses, UV-proof products, foods with high calorie.
Overseas travelers, residents from Hong Kong, Macao, and Taiwan need to apply for the Approval Letter for entering into Tibet. Otherwise, if travelers from above places are found without the letter, they will be required to return. Without the letter ,you cannot buy the air tickets in Chengdu or Katmandu, and you cannot check in at the airport.