蘇秦
Zhang Yi (before 329 BC – 309 BC) was born in the Wei state during the Warring States period of Chinese history. He was an important strategist in helping Qin to dissolve the unity of the other states, and hence pave the way for Qin to unify China. He was an advocate of horizontal alliance, unlike Su Qin; both were adherents of the School of Diplomacy.