The brazen behaviour of Prince Kang affirms Jing Ping's fears that Da Yu will soon mount another war with Liang Empire. To gather more intel on how and when the attack will occur, Ping Jing crosses enemy lines. While in Da Yu, he comes upon Lin Xi gathering herbs for her pharmacopeia. Da Yu's ex-military general Ruan Ying unexpectedly visits Prince Kang and Jing Ping risks going into the enemy's barracks to understand the full picture. (Source: frankly at MyDramaList)