a study on the region of Sanhe in Qin and Han dynasty 天下之中：秦汉三河区域研究：a study on the region of Sanhe in Qin and Han dynasty Study on the residence of the court in the Han dynasty 并列题名：Study on the residence of the court in the Han dynasty a study on the Nanchang murders in the late Qing dynasty a study on the history of Chinese migration to Thailand in Qing dynasty a study on the printing institute in wuying palace of qing dynasty a study of the Western Regions during the Tang Dynasty a study of the ancient maps of the Grand Canal in Qing Dynasty a study on the transformation of confucianism from Pre-Qin to Han dynasty