I was wielding a 2 year old sword, which the blade suffered permanent deformation.
The blade went down about 10 degrees when held horizontally.
The laminated tapes hold up well, I had a hard time cutting it down to find out the cause of failure.
It was wielded quite vigorously, and frequently, it is also one of the earliest Jian blade which survived my abuse quite well.
consider it was mistakenly thrust against a wall and actually survived, sat on and stuff like that.
The part that failed is most unexpected, iron fasteners which is used to prevent the blade from flexing actually got broken
due to fatigue failure, the remaining bamboo and wood structure survived quite well.
Most likely due to me performing heavy thrusting with it, the blade was flexing like crazy before giving off wierd sound as if something snapped.