As the second son of Chai Shao, Chai Lingwu has no worries about eating and drinking, has no hope of title, and still bears the title of son-in-law. However, Chai Lingwu has three wives and four concubines, and other concubines are as fearful of the king as a tiger. Chai Lingwu is Li Shimin's confidant. A member of the crossing army, a combination of princes and generals, and a unique way to create a glorious Tang Dynasty.