1. Because from the beginning of the Three Kingdoms, China changed from a unified country into a long-term chaotic era, which was far more chaotic than the Spring and Autumn Period and the Warring States Period. The chaos and wars in Wei, Jin, Southern and Northern Dynasties lasted for hundreds of years, and it was not until the Sui Dynasty that the three countries were unified. It can be said that the Three Kingdoms is a turning point;

2. The novel Romance of the Three Kingdoms dramatizes the Three Kingdoms, so-called heroes in troubled times come forth in large numbers, which greatly increases the influence of the Three Kingdoms on later generations.