According to textual research, the daughter country mentioned in the book is located in Kuqa, Xinjiang. Kuqa, called Qiuci in ancient times, is an important city on the Silk Road. The soil and water here are good, and it is a place for beautiful women. The legendary Zimu River is now the Kuqa River. Of course, drinking river water can only make you pregnant.

"Guo in the Western Regions of the Tang Dynasty" said: "Qu Zhi Guo is more than 1,000 miles east and west, and more than 600 miles north and south. It is a university student of the national government, with 17 miles a week." Qu Zhi, also known as Qiuci. According to textual research, this paper calls it "Dadoucheng". It is the capital of Qiuci near Kuqa County (the ancient city of Pyrrho). It was named Yancheng in Han Dynasty, Yilulu in Tang Dynasty and Qiuci Capital in Han and Tang Dynasties. This ancient city has long been abandoned.

In the second year of Zhenguan in the Tang Dynasty (AD 628), Xuanzang, a famous monk, went to India to learn from the scriptures and went west. He saw the monks gathered in the temple and the incense was very strong. He lived here for more than two months, giving lectures and passing on the teachings. In the middle of the 7th century, after Kikuchi in Tang Dynasty moved to Duhulou in Anxi, eminent monks from the mainland gathered here, and Buddhist ceremonies flourished. In the 9th century, Buddhist temples were burnt down by war, which led to their gradual decline./kloc-0 was completely abandoned at the beginning of the 4th century.

1998, the State Council was declared as a national cultural relics protection unit for the fourth time. Subashi Buddhist Temple site is located in the diluvial platform on both sides of Qielata Pass of Tongchang River (Kuqa River), about 25 kilometers north of Kuqa County. Subashi Buddhist temple site is divided into two by Kuqa River, so it is called Dongxi Temple. "Subhas" means "Shuitou" in Uygur language. Subashi Buddhist temple site is named after its geographical location.