C1647 She Left
It's a bug's body.
This bug had tried to crawl into Hee Xiucheng's mouth after it had been summoned by its companion. However, it was smashed flat on the forehead by Hee Xiucheng and got stuck on the forehead.
"It wanted to crawl into my mouth, but I smashed it to death. Use your forehead."
Hee Xiucheng looked at the bug on the ground and raised his head to say