My son is going to Tibet with his classmates in the summer vacation. I want to hear some suggestions from experienced people, mainly in safety. Thank you.

I still want to answer this question. 20 12 go to Lhasa by bike, 3 18 walk. Your son should have gone by train. Hehe, 1) Bring your ID card. Without this, you can't do it in Lhasa 100M. 2) If you want to go abroad, bring your passport. 3) If you want to go to Zhangmu or Everest, you should apply for a border defense certificate in advance. 4) Pay attention to sun protection and be sure to wear sunscreen (I used more than 50). 5) It's safe to take the train. Besides, Lhasa is the safest city in China, safer than Beijing. When your son arrives, he will think there must be a policeman in front of him. 6) I experienced altitude sickness when riding a bicycle, about 3000M, and I had difficulty breathing. It is estimated that altitude pressure is the main reason, and 60% of oxygen in other places is inland. Lhasa is 3800 meters above sea level. You can eat rhodiola in advance, but I think it's useless. It just makes you feel psychologically adapted to the plateau. In fact, everyone needs to adapt to this link, and only a few people will not insist. But if altitude sickness is serious, you must remember to go back and stop traveling. If you have a question, if it suits you, please choose me as the best answer.