Also known as Xuanling, he voluntarily joined the Li family before they captured Chang'an. He is rising rapidly to become the top strategist in Qinwangfu. He is steady in temperament, gentle and humble, thoughtful and meticulous in his plans, and fond of recommending talent. Li Shimin favors him as an assistant but has not yet informed him about the dragon child, preferring to keep the matter secret for now.
