Sun Bin and Pang Juan studied the art of war, and they also knew martial arts and anecdotes. They played in the time of Qin Xiaogong, the great grandfather of Qin Shihuang.
Zhang Yi and Su Qin majored in vertical and horizontal arts (lobbying, diplomacy). They died only 1 year after they came out of the mountain in the era of King Hui of Qin and Zhao Haoqi, the great grandfather of Qin Shihuang.
Mao Sui and Xu Fu are the late disciples of Mr. Guiguzi.
Mao Sui played in the era of Xiang Zhuang Wang (Lv Buwei was in power), the father of Qin Shihuang, and volunteered to hijack the king of Chu when he joined the alliance of Wang Wei, the king of Chu.
Xu Fu is a close disciple of Mr. Guiguzi. Learn to explore the valley, qigong, cultivate immortals, and also know martial arts. When he came out of the mountain, it was the time for Li Si to play before and after Qin Shihuang ascended the throne.