On one occasion, Sun Chuan gave Cao Cao an elephant. Cao Cao wanted very much to know how much this elephant weighed, but the elephant was too large to weigh. None of his officials could come up with a way to weigh the animal.
有一次，孫權送給曹操一隻大象，曹操很想知道這隻大象究竟有多重，問題是大象體積太大，他的臣子都想不出秤大象重量的辦法。