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The video of Shi Lu being drugged and filmed at the door of the VIP room was actually arranged by Gao Shan. The backup plan that Gao Shan mentioned was Zheng Yan.

Among his many mistresses, Zheng Yan was the most ambitious woman. She was unwilling to only be Gao Shan's woman. In other words, she felt that Gao Shan's status wasn't high enough, so the two of them reached a tacit understanding and became partners.

Gao Shan helped her get into upper-class society and get to know those people who were doing well in the upper-class society. When necessary, such as when Zheng Yan couldn't deal with those men, Gao Shan would step in. Whether it was drugging or deceiving them, he would help her get what she wanted.