谈判前后的变化Changes before and after negotiations

猫说：谈判前，双方总会充满热情的笑容，也许是真诚的。但谈判结束后，双方常会翻脸，谈判陷入破裂。

The cat said: Before the negotiations, the two sides will always have a warm smile, perhaps sincere. However, after the negotiations ended, the two sides often turned their faces and the negotiations fell into rupture.