1. Economic development and cultural prosperity;
2. After the Sui Dynasty, the starting point was higher;
3. The personnel system breaks the hereditary system and realizes the imperial examination system, which makes culture and education more civilian and expands the foundation;
4. The rulers like it and regard it as a subject for scholars;
5. Literati absorb the nutrition of folk practical brushwork structure;
6. Art linkage among painting, literature and book circles.