The original source-Zhao She's original "Two rats fight in a hole, the brave will win" ("Historical Records, Biography of Lian Po and Lin Xiangru") was a famous soldier of Zhao at the end of the Warring States Period. The main activities were in Zhao Haoqi Huiwen period. As a land official, he rented by law, which was appreciated by Ping Yuanjun, and he was recommended to be in charge of the national treasury revenue, which was quite effective. In the forty-sixth year of Zhou Nanwang (269 BC), due to the urgency of Qin Jun's attack on Zhao Kuihe (now Heshun, Shanxi), the generals were afraid of the long journey and narrow distance, and were unwilling to lead the troops to rescue. Zhao She thinks that this kind of war situation is like "two rats fight in a hole, and the brave win" (Biography of Historical Records, Lian Po and Lin Xiangru), so he was ordered to lead an army to save Wei Xiao and. With a surprise strategy, he left 30 miles in the west of Handan (now Hebei) and established a base on the spot, causing the illusion that he did not dare to fight with Qin, and using the mouth of Qin to make Zhao's intentions unpredictable and turn to Zhao's weakness. Later, Jia arrived at a place five miles away from Wei Xiao the next day and night, ready to face Qin Jun, and took the Beishan highland first, using favorable terrain to launch a counterattack, defeated Qin Jun, and solved the siege of Wei Xiao (see the battle between Wei Xiao and it). He was appointed as a servant because of his work needs, and he was in the same position as Lian Po and Lin Xiangru. Later, in the war of liberation, Liu Bocheng once said, when we meet in a narrow way, the brave will win, and the brave will win over the wise.