What should I pay attention to when traveling to Tibet and Xinjiang in April?

In fact, the temperature difference between morning and evening in April is very large. I have been to Tibet several times. These suggestions should be good. In any case, we should always watch the weather forecast. During the day, thin sweaters, coats and vests are a good combination. If you are really afraid of the cold, you should bring a thick sweater. Wear more clothes at night! If you are a lady, of course, sunscreen skin care products and lipstick are essential, not to mention sun hats and glasses. The ultraviolet rays are too strong! I advise people with heart disease not to go. If you have altitude sickness, you can drink rhodiola oral liquid after you arrive in Tibet.