The book "Mencius" originally had no chapters. When later generations divided it into chapters, they used the first sentence as the chapter title. Li Lou: A legendary person with strong eyesight. "Mencius: Li Lou Shang": "Mencius said: 'The brightness of Li Lou is the cleverness of Gongshu Zi. Without rules, it cannot form a square circle.'" Jiao Xunzhengyi: "Li Lou, the person who improved eyesight in ancient times, was a person in the time of the Yellow Emperor." The Yellow Emperor killed his mysterious pearl and asked Li Zhu to search for it. Li Zhu, that is, Li Lou, can see the end of the hair from a hundred steps away. "The King of Han praised "The Holy Lord Obtains a Wise Minister": "This will make Li Li. Lou Du's rope is cut by Gongsu. Although it has five floors and stretches for hundreds of feet, it is not mixed. "Han Yu of the Tang Dynasty's "Mingshui Fu" said: "The image is not divided, just Chengli Lou's eyes.

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