In the Tang dynasty, frequent activities of establishing marriages between different nationalities created more than one hundred and seventy poems of "He qin".

Affinity Adsorbents for N-Demethylvancomycin;

Affinity Adsorption and Purification of α-Amylase by Starch Micro-Spheres;

Expression and affinity purification of recombinantstaphylokinase using pET-29b vector;

During the periods of Gao, Hui emperors and the period of Gao queen, they tried to restrain Xiongnu from invasion with political marriage, because the military and economy were not that powerful.

When the Tang government attempted continuously to cement relations with rulers of minority nationalities in the border areas by political marriages,the Emperors even more repeatedly married their daughters off to the vassal states,for the superficial peace of the country.

On He-qin and Hostage of Han Dynasty;

It is an important measure for the Tang dynasty to cope with the issue of minority nationalities to intermarriages for pacification, and it exceeded former dynasties in range, area, number of people, continuous time, effect, influence etc.