Prediction of weather in ancient Japan

Climate forecast is indispensable for people’s production, work and life. In 132 AD, during the Eastern Han Dynasty, Zhang Heng invented the world's earliest wind direction instrument - the Xiangfeng Bronze Bird.

This is a five-foot-tall pole planted on the open ground. The pole is equipped with a flexibly rotating copper bird. The direction of the wind can be determined based on the direction of the copper bird's rotation