《论衡·卷十五·变动篇》
风吹来了，卖谷的人依据风向就抬高或降低谷价，这是由于天上的气影响了人心和物价的缘故。
风至而籴谷之人贵贱其价，天气动怪人物者也。
When the wind blows, the grain sellers raise or lower the price of grain based on the wind direction. This is because the qi in the sky affects people’s hearts and the price of goods.