Qin’s Moon Season 4 Episode 4 English Subbed Episode Title:Turbulent Undercurrent.Episode Description:Da Siming appears as an old lady at the Confucian headquarters and captures a Mohist Ah Zhong, who is interrogated by Star Wraith to find the location of the Mohists. Zhao Gao and his Net Trap group arrive in Shanghai and meets Li Si who sends them to retrieve the Black Dragon Scroll. The Mohists have the scroll but it is protected by Gonshu Clan’s mechanisms. Shengqi challenges Wei Zhuang and the battle commences on an old bridge.