Who keeps the scriptures in Dunhuang Mogao Grottoes?

This is not just a satrap. During the Anshi Rebellion, the five countries of Sha, Gan, Su, Liang and Gua fell one after another, and the Tang Dynasty was unable to recover them. Later, Zhang Yichao took back eleven states in Hexi, but the emperor did not expect it, so he named Zhang "Rebel Army". Later, Uighur and Tubo made a comeback, and Zhang was replaced by Cao Zhi. During the period of our time, the sixth Guiyijun was divided by Uighur, and Cao Zongshou succeeded to the throne at this time. Although the Song Dynasty established its position, its strength was exhausted, leaving only two states: Sha and Gua. Cao Zongshou knew he was going to die. Fifty thousand scriptures collected by Buddhist temples in these two States were secretly transported to Shazhou, which is now Dunhuang, and sealed in Mogao Grottoes. Then Cao Zongshou surrendered to the invading Li Yuanhao.