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This book is about a young man from the 21st century who travels to the Republic of China in 1932. It is also a story about building a country from scratch and resisting foreign enemies. Zheng Yu: "Well, I'm going to visit that country today." President of the United States: "Can you let us go?" Queen of the Empire where the sun never sets: "Why, that devil Zheng Yu is here again. If it doesn't work, I have to go out and hide." The head of the German Empire "Well done, that's how we should beat them." Emperor of Japan: "Baga, you work like crazy, you understand" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.