The emperor meets up with Tang Fan to quell the commotion in the palace. Tang Fan realizes that the soup they drank might be related to the case. Tang Fan gets the poison to investigate and his doctor friend, Pei Huai, ends up taking the poison to test the effects. They decide to investigate the Noble Consort and those around her. Tang Fan finds a clue leading to a Grandfather Liu. Wang Zhi finds Liu first and Liu dies before Tang Fan and Sui Zhou get there. Tang Fan starts teaching Dong Er to read. (Source: jindreame at MyDramaList)