1. Tang culture basically has three basic characteristics. First, the cultural system is huge and complete, with a high degree of development; Second, the culture of the Tang Dynasty was extremely open; Third, Tang Wenhua has obvious characteristics of being close to the people, attaching importance to the real world and not sticking to the rules.

2. The culture of the Tang Dynasty was dominated by Chinese culture, which experienced thousands of years of development and reached a mature stage in the early Tang Dynasty. Mature culture has the confidence to maintain its own characteristics and the ability to absorb and digest other cultural contents, so it has the mind to accommodate dissidents.

Partly for this reason, foreign religions such as Buddhism, Islam, Zoroastrianism, Manichaeism and Nestorianism can enter China step by step. The influential Buddhist culture of Tianzhu was introduced into China, and finally merged with China's own culture and China.

Confucianism is an important part of Chinese culture. There is such a motto in Confucianism: "If you have a threesome, you must learn from me". As an ideology, Confucian culture attaches importance to "harmony" and is quite inclusive, which is also the internal reason for Tang Wenhua's opening up. Buddhist culture is also an important part of Tang Wenhua, and the openness of Tang culture is also influenced by Buddhist culture.