In fact, the relationship between the Tang Dynasty and Tubo was very delicate, including the tense state of struggle and the "relationship between nephews and uncles" after the "kinship" policy. This complicated political and diplomatic relationship enabled the Tang Dynasty to recuperate and devote itself wholeheartedly to national construction and population growth in the early days of the founding of the People's Republic of China.

The kiss policy of the Tang Dynasty and all ethnic groups was actually a special political means in an extraordinary period. Under this background, the policy of "kiss and peace" has completely deviated from the superficial meaning of "kiss and peace".

The real significance of the policy of "pro-marriage" in Tang Dynasty lies in strengthening the ties between ethnic groups and conducting economic, cultural and military exchanges through "pro-marriage" on the premise of safeguarding national interests and political stability. Through this policy, the Tang Dynasty and other national regimes could form a nominal "uncle-nephew relationship" and a so-called "military alliance".

From a historical point of view, it is not difficult to find that under the background of the prosperous Tang Dynasty, the "pro-marriage" in the Tang Dynasty was more like holding a wedding for neighboring friendly countries, rather than achieving the goal of stabilizing the political power through "pro-marriage" because of the strength of the early Han Dynasty itself.

Although the "pro-affinity" policy of the Tang Dynasty also contains this meaning, we will find that this form of "pro-affinity" policy is actually a ruling policy of the Tang Dynasty on the premise of its own strength. After all, the Tang dynasty formed an "uncle-nephew relationship" with other minority regimes through the policy of "pro-affinity".