Study of the biographies of empresses and concubines in the Tang dynasty Complementary study on biographies of empresses and imperial concubines in the two book of the Tang Dynasty Study on the issues of local social governance in the Ming dynasty research on the culture of headwear of empresses and imperial concubines in Qing dynasty Study of the imperial examination system in the Tang dynasty Study on the legalization of ethnic policies in the Qing dynasty Study on the geographical distribution of the talents in the late Qing dynasty Study of studies on Mencius in the Qing dynasty Study on the local gazetteers of villages and towns in Qing dynasty Study on the modernity of travels in the Late Qing dynasty