In the second year of Daye Emperor Yangdi of Sui Dynasty (AD 606), there were about 8.9 million households in the country, and the population was about 46 million. In the eighth year of Tang Wude (AD 626), the number of households in the country was less than 3 million. Based on counties and counties in Hebei, Henan and Shandong) less than 700,000, about one-seventh of the 4.7 million households in these three places in the early years of Sui Daye. Since the seventh year of Daye (AD 611) in Shandong From the beginning of King Bo’s uprising against the Sui Dynasty, to the end of the Wude period until Li and Tang’s army quelled the war in China, in the fifteen years, about 6 million households and 30 million people in China died in the war, and the densely populated middle and lower reaches of the Yellow River were even more At the end of the Sui Dynasty and the beginning of the Tang Dynasty, all the heroes rose together, the winds roared, the tigers and eagles flew up, and the momentum was magnificent. When countless people sang this passionate history and praised the famous heroes, did they ever hear To the cries of 30 million innocent creatures in the Middle Earth? Have you ever seen 30 million white bones in the north and south of the river? To be born in this era is like walking into hell. He walked into hell like this, from Dunhuang to Luoyang, from Shuzu To the commander, full of hopes and dreams, plunged into the turbulent torrent of history, trying to save those 30 million innocent lives.