Wen Huai goes after A'Chu and takes her back to his prison for trial. He comes to help her but needs to take drastic measures that jeopardize her life. The emperor transfers the leadership of the Heavenly Eyes spy network to Wen Huai who accidentally causes its demise. He then decrees that Yan Xun be sent to Yingge Garden and live under house arrest for three years. Many feudal families eye this as an opportunity to eliminate Yan Xun so they can rule Northern Yan. (Source: frankly at MyDramaList)