It's quite evident that in the ancient history of mankind, a civilization-state as large as China, capable of maintaining long-term unity, is extremely rare. Why has Chinese civilization not only persisted uninterrupted but also maintained a high degree of unity? In the third episode of the series 'Classics of Chinese Thought,' renowned political scientist Professor Zhang Weiwei and the host discuss the journey of Chinese civilization from the starry sky to the unity of pluralism.