Sun Bin
Tian Ji was descended from an aristocratic clan based in the State of Qi and was later appointed a military general by King Wei of Qi. In 340 BC, Sun Bin arrived in the State of Qi as a refugee from the State of Wei. Tian Ji met Sun Bin and was so impressed with Sun's expertise in military strategy that he kept Sun at his residence as a retainer (门客). Once, Tian Ji was invited to participate in a horse-racing event hosted by the king and Sun Bin proposed a strategy for Tian Ji to win. Tian used his inferior horse to race with the king's best horse, his average horse to race with the king's inferior horse, and his best horse to race with the king's average horse, winning the latter two out of the three races. The king was impressed by Tian Ji's victory and Tian told the king that he won the race after following Sun Bin's suggestion. Tian recommended Sun Bin to the king and the king appointed Sun as a military strategist and advisor.