Why did the Chinese build the Great Wall of China?: The craziness will Estrange the Beloved Princess

A handsome prince with a crazy thought ate the forbidden fruit and transformed into a powerful monster. He caused total destruction and ruin on the planet Mars. He was made the supreme evil creature and deity by the Chinese, who worshipped him as the flying dragon god. The Chinese invaded the neighbouring countries and collected valuables and gold. The ill-fated queen transformed into a mermaid and lived in the water bodies.