When Emperor Taizong saw that Xuanzang was so talented, he was not afraid to travel long distances, so he retrieved the true scriptures and became proficient in Sanskrit. He translated Indian classics in an easy-to-understand way, which made people can't help but admire. He paid more and more attention to Buddhism and became more and more fascinated with it. When Xuanzang asked him to preface the scripture, Li Shimin readily agreed. This is the preface of the holy religion. This shows that Li Shimin attached great importance to Buddhism in the Tang Dynasty.
The preface to the holy teachings was first written by Chu Suiliang, one of the four great calligraphers in the early Tang Dynasty. Later, Shaman Huairen collected words from Wang Xizhi's calligraphy and carved them into inscriptions, which was called the preface to the holy teachings of Wang Xizhi's book by Huairen. Wang Xizhi was a calligrapher in the Eastern Jin Dynasty, and was called "the sage of books". He has made great achievements in truth, line and grass. Wang Xizhi's calligraphy skills are superb, flowing and vigorous. Li Shimin regarded Wang Xizhi's calligraphy as a treasure, and when compiling the History of Jin Dynasty, he personally made a biography of Wang Xizhi.
Twenty-five years later, the preface to the holy teachings was engraved with Wang Xizhi's original work, which left precious materials for future generations and provided a good sample for future generations to copy Wang Xizhi's original work.