The trail of the gold needle leads them to the Life and Death House, where Cai Wei and Pan Yue assume the identities of two patrons. Cai Wai makes a scene to lure out the murderer, but he commits suicide before they can determine the mastermind. Pan Yue is framed for killing Cai Sheng’s concubine, so he and Cai Wei are targeted and surrounded by Cai Sheng’s men. (Source: frankly at MyDramaList)