It's natural(tiān xíng shí qì)

It's natural

The Chinese idiom Ti ā nx í ngsh í Q ì means an epidemic caused by abnormal climate. It's from Qian Jin Fang.

The origin of Idioms

Qian Jin Fang: "in winter, when there is a great heat; in summer, when there is a great cool, don't accept it. Those who suffer from the weather are all responsible for this."

Idiom usage

Six months later, suddenly Liu Er felt the natural trend and had a headache and fever. (notes on the text of the contract in qingpingshan hall by Hong Hui in Ming Dynasty)

Chinese PinYin : tiān xíng shí qì