The story is From the warring states period. There is a lobbyist, named shu qin, at that time has very high power and prestige, but also have a lot of enemies. Finally he is killed in qi. King is angry, want to revenge for shu, but cannot find the murderer, so he has a ruse, he cut off shu’s head from the body, hung on the gate, with a statement said: "shu is the hidden traitor, who killed him will receiving the reward, one thousand gold. When the notice posted, there are four people claiming to that they killed shu qin. King said: "it is not allowed to pretend to be!" Four people are convinced they did. King said: "one thousand gold, how much four people share?" Four answered: "two hundred and fifty." King says with angry: " put the four 'two hundred and fifty' out beheaded!" The word "two hundred and fifty" origin, just like that.