These two sentences are linked with Wei Yuan:
Wei Yuan took many books to Beijing to take the exam the next year. When I arrived at Dongting Lake by boat, it was "the evil wind whistling and the turbid waves emptying". We have bad weather. After reading a book, he threw it into the lake. Several bundles were lost one after another. The boatman asked him, "Sir, do you know to throw books into the lake?" Wei Yuan explained: "There are too many books to be intercepted; What's more, "you can remember the book after reading it, and you don't need to read it again." I said, I want to throw the History as a Mirror I just read into the lake. The boatman didn't believe Wei Yuan had such a good inspiration, so he asked for a book to test him. Sure enough, the boatman mentioned the last sentence, and Wei Yuan recited the next sentence, which was really memorable. Someone wrote a couplet for Wei Yuan, saying: Now, ten lines, thousands of books is hidden in his chest. Wei Yuan lost his book in Dongting and became a beautiful talk.