In the twentieth year of Zhao Huiwen (279 BC), Zhao Haoqi, the king of Qin, played a trick again, sent envoys to Zhao to deliver letters, and offered to meet him in Mianchi (now Mianchi West, Henan). King Huiwen of Zhao is afraid of the State of Qin and plans not to go. Lin Xiangru and Lian Po both made suggestions. If they don't go, it shows that Zhao is timid. Wang Zhao took their advice and decided to let Lin Xiangru go to Mianchi to meet King Qin Zhao. Before the trip, Lin Xiangru, Lian Po and others made full preparations and laid heavy troops at the border to prevent the sudden attack and changes of Qin. Lian Po sent the prince of Zhao and Lin Xiangru to the border to bid farewell to the prince of Zhao, and suggested that if the prince of Zhao did not return after 30 days, please make the prince king to cut off the hope of Qin. Wang Zhao agreed. So he took Lin Xiangru and other officials to Mianchi to see King Qin Zhao. The king of Qin wanted to humiliate the other side to show off his diplomatic victory. Lin Xiangru, standing beside the prince of Zhao, saw the intention of the king of Qin, so he adopted the strategy of dealing with a man as he deals with you. Both sides refused to let him go until the end of the banquet, and the king of Qin did not take advantage of the prince of Zhao. Because Zhao was well prepared in military affairs, Qin also dared not make other moves. In this face-to-face diplomatic struggle with unequal strength, Lin Xiangru impressed the King of Qin and his vassals with his superhuman agility, flexibility and fearless dedication, and won a great diplomatic victory for Zhao Haoqi Huiwen in Mianchi without being humiliated by Qiang Qin.