The plaque in the Palace Museum was written by Guo Moruo.
Details of the plaques in the Palace Museum:
After the Palace Museum was separated, it actually became two museums that were in the same line but completely independent. Neither of them continued to use Li Shizeng’s inscriptions. In the 1960s and 1970s, each of them asked Gao Ming to re-make the plaques.
The Taipei Museum re-inscribed the plaque in 1965, and the Beijing Museum re-inscribed the plaque in 1971. The inscriptions were by Zhuang Yan and Guo Moruo respectively.
The situation at that time was that in 1971, Guo Moruo came to the old museum for guidance. Dean Wu Zhongchao and others suggested that Guo Moruo inscribe a new plaque for the old museum. Guo Moruo immediately agreed and wrote it on the spot. The preparations were in a hurry, and the paper they found had been printed on one side. Guo Moruo turned the paper over and wrote the inscription on the back.
Guo Moruo's inscription seems very casual and relaxed, but it is this randomness that makes the plaque he inscribed feel more natural and real.
Although Guo Moruo is a great name in the history of contemporary calligraphy, his greater achievements were in archeology and history. At that time, he could be regarded as a leader in the cultural world. The Palace Museum was inscribed by him , it can be regarded as well-deserved.