What is the source of fear?

1, the origin of the fright is the third of the 24 solar terms, marking the beginning of the mid-spring season; Twenty-four solar terms: February Festival, when everything vibrates, it thunders, so it is called sting. It's a leaving thorn.

2. At this time, the spring thunder will sound, and the insects hibernating in the soil will wake up and start to move, so it is called enlightenment. Later, in order to avoid the name of Emperor Wu of Han Dynasty Liu Qizhi, it was changed to Jingzhi.