1, you must bring your ID card.
2. Border card: If you want to go to Everest Base Camp, you must apply for a border card. It is best to apply for a border defense card at your own police station, which is free and can be collected on the spot. If you really forget, you can do it in Lhasa and ask the local travel agency for help. At present, the fare you need to pay is 80 ~ 100 MB, so you have to waste a day.
3. Student ID: This whole Tibetan area can be used in Potala Palace. The normal ticket is 200 yuan. If you have a student ID card, it's half price.
Nothing else. I wish you a happy trip to Tibet ~ ~ Remember to sit on the wall of Yu Yan in front of Jokhang Temple and watch those who kowtow.