Tokyo Menghua Introduction: The social economy was very developed during the Northern Song Dynasty and reached the peak of China's feudal society. Its agriculture, handicrafts, mining and smelting, water transportation and shipbuilding, science and technology, literature and art, and urban development have all created new glories in China's feudal history. Especially in the Northern Song Dynasty, Tokyo had a majestic city, "a population of over one million, and goods concentrated in the north and south." It had a prosperous economy, beautiful scenery, and abundant resources. It was not only the national political, economic, and cultural center, but also the most prosperous city in the world, with " Bianjing has the reputation of being "unparalleled in the world".