Jin GuangYao ultimately lets them into the treasure room and Qin Su is still inside. Wei WuXian starts by investigating her but she is unresponsive. Then, he lays eyes on a dagger and Jin GuangYao explains that it is a spiritual device previously owned by Wen RuoHan and Wen Qing. Suddenly, Qin Su grabs the dagger and stabs herself to death, leaving Jin GuangYao devastated. Not long after, Jiang Cheng and Nie HuaiSang also arrive. Lan XiChen then starts explaining about the sword spirit and Lan WangJi's discoveries which all lead to Nie MingJue. Nie HuaiSang faints at the news and Jin GuangYao continues his crying act. He then starts doubting "Mo XuanYu" and attacks him. Lan WangJi immediately protects him and a fight ensues, causing Wei WuXian to use SuiBian and revealing his own identity. The two then escape but are trapped by the surrounding disciples outside. Wei WuXian tells Lan WangJi to act as if he is also tricked, but Lan WangJi wishes to walk down this path with him. The two then counters the disciples and runs away. But Jin Ling stabs Wei WuXian before they manage to escape. On the way, Lan WangJi passes spiritual energy to Wei WuXian and the latter thinks about how Lan WangJi is the only person who stands by him. Wei WuXian then wakes up in the Quiet Room at the Cloud Recesses. He and Lan WangJi speculates that Mo XuanYu might have been kicked out because he found out the truth. Then, Wei WuXian wonders if his sword is really sealed and Lan WangJi tries pulling it out to prove his point. Lan XiChen also enters the room to discuss about the matter at hand. However, while Lan WangJi trusts Wei WuXian, Lan XiChen also trusts Jin GuangYao. Thus Wei WuXian plays Jin GuangYao's "Cleansing" as evidence. The Twin Jades realises that a part is wrong, so Lan XiChen brings them into the Forbidden Room to look for a music sheet used for harm. At the end, Wei WuXian then theorises if it is possible that Jin GuangYao used this harmful music like a slow poison to worsen Nie MingJue's condition. (Source: Wikipedia)