106 years ago today, on August 16, 1919 (July 21, 1919 in the lunar calendar), Hu Shi advocated sorting out the national heritage. On August 16, 1919, Hu Shi sorted out the national heritage and answered Maozishui. He said in the article: "We sort out the national heritage, and the academic circles in the world can get a little benefit, but it must not be much. ¡­ ¡­ Among all the academics in the world, many are more useful than the national heritage, and many are more important than the national heritage. I thought we should not preserve this narrow utilitarian concept before learning. Scholars should look at their own proximity, choose the knowledge they want to do, and after selecting it, they should have an attitude of 'seeking truth for truth'. People who study academic history should use the standard of 'seeking truth for truth' to criticize various academics. Learning is equal. The discovery of the ancient meaning of a word and the discovery of a star are both great achievements. Besides, it is necessary to sort out the national heritage now. We should try our best to guide "national heritage families" to use scientific research methods to do research on national heritage, instead of having a stereotype of "usefulness or uselessness" in advance, resulting in many unnecessary opinions. "