What problems should I pay attention to when going to Tibet?

① Pay attention to the temperature difference between day and night and bring warm clothes. (2) Food should be prepared to avoid a trip, but many delicious foods should not be eaten. Featured foods include: stone pot chicken, highland barley wine, Bari bear highland barley sprouts, Ciba and so on. ③ Pay attention to religious beliefs and avoid conflicts with local people. ④ Prepare drugs to relieve altitude sickness.