There are always two sides to a coin, which is the essence of dialectical thinking.

凡事都存在正负二个方面，可谓物极必反，就是所谓的辩证。

youdao

There are always two sides to a coin, which is the essence of dialectical thinking.

凡事都存在正负二个方面，可谓物极必反，就是所谓的辩证。

youdao