1. Clothes: Bring necessary sweaters, jackets, and cotton-padded clothes. Prepare 3 to 5 sets of clothes. Wear a pair of shoes that are best for walking. Sometimes the distance is long and you need to walk for a long time, so wear comfortable shoes!

2. Necessary medicines: cold medicine, stomach medicine, food allergy medicine, anti-altitude medicine (Rhodiola rosea), motion sickness medicine (there are many winding mountain roads in Yunnan), band-aids, etc.

3. ID card, student ID card, military officer ID card, non-commissioned officer ID card and other identity documents. Elderly people should also bring their "senior ID card". When you go out, it is necessary to bring proof of your identity.

4. Money. You don’t need to bring too much cash, but you should have a bank or credit card. Nowadays, domestic electronic payment is very convenient. If you have WeChat wallet or Alipay, then it is very important to bring your mobile phone.

5. Mobile phone, data cable, charger, selfie stick, mobile power supply. As mentioned before, electronic payment in China is now very convenient, so in addition to making phone calls, mobile phones are also an important payment tool.