Interpretation: Nine tripods: treasures of ancient countries, said to be forged by Xia Yu. A sentence is worth the weight of nine tripods. Metaphors speak with great power and can play a great role.

Allusion: During the Warring States Period, Qin's army surrounded Handan, the capital of Zhao, and the situation was very critical. King Xiaocheng of Zhao sent Pingyuan Jun to Chu to ask for help. Pingyuan planned to lead 20 disciples to complete the mission, but 19 were selected, and one less could not be settled. At this time, Mao volunteered to go, and Pingyuan Jun was dubious and reluctantly took him to Chu.

After the Plain Field Lord arrived in the State of Chu, he immediately talked to the King of Chu about assisting Zhao, and after talking for a long time, there was no result. At this time, Mao Sui said to the King of Chu: We are here to invite you to send reinforcements today, but you did not say a word, but don't forget that although the State of Chu has many soldiers, it has lost many battles and even lost the country. In my opinion, the State of Chu needs to unite against Qin more than the State of Zhao! Mao Sui's words made the King of Chu convinced and immediately agreed to send troops to assist Zhao.

After returning to Zhao, Lord Pingyuan said with emotion: As soon as Mr Mao arrived in Chu, he made Chu weigh more than Jiuding Dalu. (Jiuding Dalu: The name of the bell, together with the tripod, is a treasure of the ancient country.)

An idiom comes from this story to describe a sentence that can make a big difference.