Introduction to Gui Youguang: Gui Youguang (1506-1571), also known as Xifu and Kaifu, also known as Zhenchuan, was an official and essayist in the Ming Dynasty. Because it was the bridge between the "Eight Great Masters of the Tang and Song Dynasties" and the "Tongcheng School" of the Qing Dynasty, it was called the "Tang and Song School", and its writings were called "the best in Mingwen". "Wu Shuili Lu" and so on, are known as "today's Ouyang Xiu".