Explanation: When the original means of Bohai Prefecture Han Xuan Gong then held the sword to induce farmers to abandon the armed struggle against the uprising and in farming. Change the industry returned to agriculture after the analogy. Source: "Han Gong then transfer" of the people who take the sword, the sword to sell cattle to buy and sell knives to buy calves, said, 'What is the calf with the cow wear. '"