Where is the original preface to Lanting now?

According to the New Tang Book, the Preface to Lanting recorded in the Old Tang Book should still be in Ganling. As mentioned above, Ganling is well protected, and it is the only tomb in the Tang Dynasty that has not been stolen. What's more legendary is that there are two emperors buried in it. History books say that Lanting preface is kept in an iron box, and the ink is as new as new.

Mr. Guo Moruo advocated that the tomb excavated was not Ganling, but Li Xian, the prince of Tang Zhongzong, because he mistakenly thought it was Li Xian's tomb and bet with the wife of the mayor of Beijing, so he excavated it.

After Ganling was discovered in 1970s, it was planned to be excavated. However, because the Ming Tombs were just excavated at that time, it was not very successful, and many precious cultural relics were destroyed by oxidation. Because there is no better anti-oxidation measures, Ganling has been excavated to this day.