How common are Chinese swords with bent blades?

[Sakalord364]

How common are period sources stating Chinese blades bending in combat, or examples of antique Chinese swords with bent blades? Swords bending were a common occurrence elsewhere in the world, I’m wondering if this phenomenon was also recorded in China?

[Jim McDougall]

How common are period sources stating Chinese blades bending in combat, or examples of antique Chinese swords with bent blades? Swords bending were a common occurrence elsewhere in the world, I’m wondering if this phenomenon was also recorded in China?

Really unusual question. With bronze weapons, it was usual as I understand that these blades would bend, and had to be returned to shape. In much later years where blade flexibility was of course important bending blades was a common test.
What exactly is being sought here, what period etc.