What's the weather like in Shangri-La in October? Is it necessary to bring a down jacket?

Answer: When you come to Lijiang, you must bring all your clothes. When the sun is shining, you will put on a T-shirt. Once it rains, the temperature will drop quickly. Especially when you go to Yulong Snow Mountain, you must prepare a down jacket, where the temperature difference between morning and evening is particularly large (the down jacket is very light, so you can tie your waist or fold it up and put it in your travel bag when it is hot). Yulong Snow Mountain is a high altitude area, and rhodiola and inosine can be taken to prevent mountain reaction. In addition, chocolate and brown sugar can also alleviate mountain reaction. thank you