Soon after Chao Gai is elected chief of Liangshan Marsh, he sends gifts to convey his gratitude to Zhu Tong and Song Jiang, who had warned him of the impending arrest, thus enabling him to make preparations to escape. Song kills his mistress Yan Poxi in anger when she threatens to report him after discovering the gifts and a letter from Chao revealing his connection to Liangshan. The magistrate orders Zhu Tong and Lei Heng to search for Song Jiang at his father‘s house. Zhu tells Lei Heng to watch over Song's father while he alone goes search for Song. As Song has earlier told him there is a pit under the floor in the study room good for hiding, Zhu heads to the spot, lifts the cover and finds him there. However, Zhu tells Song to flee. He reports to the magistrate that Song could not be found.