Tomb-Sweeping Day is going to Beijing. It's very cold. What clothes should she wear?

This is Tomb-Sweeping Day in early April. Generally speaking, the weather is cold in the morning and evening, and it is warmer at noon. This is under the condition that the weather remains unchanged. When you go out at this time, your clothes should be elastic. Just a few layers, you can reduce it when it is hot and add it when it is cold. Wear a thick T-shirt inside and a double coat outside to keep out the wind. It's windy in spring in Beijing. Pants can be worn directly in jeans.