Three major movements in Meng Mu: When Mencius was a child, his father died young and his mother never remarried. At first, they lived next to the cemetery. Mencius and his neighbor's children learned to bow down and cry like adults and played a funeral game. Mencius' mother looked at it and frowned: "No! I can't let my children live here! " Mencius' mother took Mencius to the market and lived near the place where pigs and sheep were slaughtered. When they arrived at the market, Mencius and the children in the neighborhood learned that businessmen were doing business and slaughtering pigs and sheep. Mencius' mother knew this and frowned: "This place is not suitable for my children to live in!" "So they moved again. This time, they moved near the school. At this time of the first day of the summer calendar every month, officials go to the Confucian Temple, bow down and treat each other politely. Mencius learned to remember what he saw. Mencius' mother nodded with satisfaction and said, "This is where my son should live!" " "

Encircling Wei to save Zhao: When Tian Ji and Sun Bin led the troops into the border of Wei and Zhao, Tian Ji tried to push Zhao Handan, but was stopped by Sun Bin, saying, "You can't fight with a clenched fist, and you can't take part in the war. To solve disputes, we must seize the key, take advantage of the situation and follow the trend. The two sides can naturally be separated by constraints. Now the elite of Wei has left this country, if I attack Wei directly. Pang Juan will return to Li to save him, and the siege of Handan will solve itself. If we ambush Pang Juan in the middle of the road again, his army will be defeated. Tian Ji followed the plan. " Sure enough, Wei Jun left Handan, was ambushed on his way back, and fought Qi in Guiling. Wei Bing traveled long distances, exhausted, and fled everywhere. Pang Juan reluctantly cleaned up the mess and returned to the girder. The division of the Qi army won a great victory, and Zhao Zhiwei was thus solved. This is the famous story of "encircling Wei to save Zhao" in history. Thirteen years later, Qi Weijun crossed the battlefield again, and Pang was ambushed by Sun Bin, knowing that he was mentally poor and defeated. Sun Bin became famous in this name and spread his art of war.

Calling a deer a horse: from Records of the Historian Qin Shihuang's Biography. According to legend, Zhao Gao tried to usurp the throne. In order to test which ministers in the imperial court obeyed his wishes, he specially gave Qin Ershi a deer and said it was a horse. Qin Ershi didn't believe it, so Zhao Gao made excuses to the ministers. The minister who dared not oppose Zhao Gaoyi said it was a horse, and the minister who dared to oppose Zhao Gaoyi said it was a deer. Later, he said that he was a deer minister and was killed by Zhao Gao by various means. The story of referring to a deer as a horse has spread to this day, and people use it to describe a person's right or wrong, reversing black and white.

Dark Chen Cang: From Sima Qian's Historical Records Biography of Huaiyin Hou. After the peasant uprising at the end of Qin Dynasty, Xiang Yu and Liu Bang fought for the world for four years. Liu Bangxian attacked Xianyang and established himself as the king of Guanzhong. Xiang Yu has a strong military strength. Liu Bang gave Xiang Yu Xianyang and Guanzhong and went to Hanzhong himself. Adjacent to Liu Bang's garrison in Hanzhong is Zhang Han. In order to confuse Xiang Yu and prevent Zhang Han from invading, Liu Bang burned the plank road in and out of Hanzhong. Later, Liu Bang became stronger and appointed Han Xin as the general, sending troops to fight against Xiang Yu. In order to confuse the enemy, Han Xin sent more than 10,000 troops to repair the burned plank road. The plank road restoration project is arduous and slow. Zhang Han knew that it was not easy to repair the plank road, and he was unprepared. As everyone knows, Han Xin's main force has taken the path to March into Chencang, and soon captured Xianyang and occupied Guanzhong. Sweat glands adopted the strategy of "one bright and one dark" and "covering the dark with bright", and won a great victory in Guanzhong.

Idioms are basically derived from ancient interesting things or historical facts.