古人讲“事必有对”，孤阴不生、独阳不存、阴阳相长。

As ancient men said, "Anything has its opposite. " Yin cannot exist without Yang, and Yang cannot grow without Yin;

youdao

古人讲“事必有对”，孤阴不生、独阳不存、阴阳相长。

As ancient men said, "Anything has its opposite. " Yin cannot exist without Yang, and Yang cannot grow without Yin;

youdao