So, what are the "three flavors"? It turns out that the "three flavors" are derived from the old saying that "reading classics tastes like rice, reading history tastes like a dish, and reading hundred schools of thought tastes like acyl sugar". Its main idea is: reading four books and five classics is the basis of eating rice and flour; Reading classic historical records tastes like eating, drinking, food and wine; While reading books such as hundred schools of thought's theory tastes like sauce and vinegar, just like seasoning in cooking.
The horizontal tablet of "three pools mirroring the moon" was written by Liang Shanzhou, a famous calligrapher during the reign of Emperor Qianlong and Jiaqing in Qing Dynasty. At that time, there was such a woodcut couplet hanging on both sides of the plaque: "I am silent and filial, and I am too fond of reading."