孙膑
In the Qi state, Sun Bin became a retainer (guest) in the residence of Tian Ji, a military general. Once, King Wei of Qi invited Tian Ji to a horse racing competition. Sun Bin suggested a strategy to Tian Ji to utilize his horses to best advantage, and Tian won two out of three rounds in the race. The king was impressed with Tian's victory. Tian admitted that he won with the help of Sun Bin, and recommended Sun's talents to the king. King Wei wanted to appoint Sun Bin as the commander of the Qi armies. Sun declined, as his handicap prevented him from riding horseback, and would have a negative effect on the morale of soldiers. Sun was then appointed chief military advisor instead and served as Tian Ji's deputy.