I just came back not long ago. Soon after, I heard the tour guide say that tourists are not allowed to enter in order to protect cultural relics. I used the big screen to show the cultural relics in the square, and now the big screen is built. Think about it. A ticket of 100 yuan is nothing to the Potala Palace, where there are countless gold, silver and jewels. After reading it, you will feel that gold is the most worthless thing in Tibet.
Regardless of altitude sickness, peace of mind is the main thing. When I went there, I looked up a lot from the Internet and was deeply inspired. Calm down and relax. What a rare opportunity! friends.
If you go to the local area, you can find a travel agency and take care of some things. You can take a box of 30 yuan traditional Chinese medicine "Gao Yuan 'an". Eat well, have a good rest, don't do strenuous exercise, everything is fine!
I wish you a safe journey!