Hao, the assistant, was a plump man in his thirties. He looked very friendly and nodded at Yu Xinyi when he heard her greeting: "Good evening, everyone is here now.",Since it was almost time and everyone had arrived, Hao's assistant got straight to the point: "I called you all here today for a test. Tell me, how much do you know about Qiyuan Pharmaceutical Factory",He said, then suddenly lowered his voice: "But, how true these rumors are, to scare away so many people, this factory definitely has something unusual. Your test tonight is to stay in the factory for four hours."。