C836 Artificial Cause

"Director, director …" The assistant came running out of the locker room, gasping for breath.

"What's going on?" Lee Zhen asked.

"I asked Sister Yan Xi about her costume. It's, it's …"

"Don't stammer, speak!"

"It was man-made." The assistant handed over Yan Xi's costume to Lee Zhen, "Director, look. The threads here are neatly cut, leaving only a tiny bit of thread