In what way do Han people observe whether the weather is a weather vane, a bell or a bronze phoenix?

The anemometer of wind instruments was used for observation in Han Dynasty. In the Western Han Dynasty, an anemometer called "Qian" was popular. Huai Nanzi pointed out that this anemometer is very sensitive and is not calm for a moment under the action of the wind. In the Han Dynasty, there were other wind instruments besides wind instruments.

Copper anemometers "Copper Phoenix" and "Xiangfeng Wu Tong" are the earliest anemometers in the world. Xiangfeng Wu Tong is a crow-shaped anemometer made of copper, which means "observing the wind". The best preserved Xiangfeng Tongbird is the couple Xiangfeng Tongbird at the top of Hunyuan Yuanjue Temple.