2. The name of the hot spring is an inscription written by Emperor Taizong for Lishan Hot Spring. There are only 48 lines left in the running script, with a total of 354 words. This monument was erected on June 28th, the 22nd year of Zhenguan, the year before Taizong died. The original stone has long been lost. According to records, there are dozens of hot springs in the Tang Dynasty, and a line of calligraphy with the inscription "August 31, the fourth year of Yonghui (653)" proves that it is indeed the early Tang Dynasty.
3. Later, the original extension was lost. In the 26th year of Guangxu reign in Qing Dynasty (A.D. 1900), Wang Yuan, a Taoist priest, discovered the Tibetan Sutra Cave in Cave 16 of Mogao Grottoes in Gansu Province (now numbered Cave 17 of Thousand Buddha Cave in Mingsha Mountain, Dunhuang). There are three Dunhuang stone chambers in the cave, one of which is Tang Taizong's running script "Hot Springs Ming", with 50 existing caves. Unfortunately, these three things are not at home now. The first two pages of Hot Springs, Diamond Sutra and Huadu Temple were brought to France by pelliot, and are now in the National Library of Paris. The last ten pages of Huadu Temple were brought to England by Stein before pelliot, and are now in the British Museum in London.