ji nu, his real name is Liu Yu. A poor man who made a living by knitting straw shoes ascended the throne with his personal efforts and was historically known as "Song Wudi". Xin Qiji described this politician and military man who was few in Chinese history by "Thinking of those years, the golden horse and swallowing thousands of miles like a tiger". Up to now, the only one who can defeat more than ten times the cavalry elite (30,000) with a few infantry (2,000) is the "Moon Array" invented by Liu Yu and him. Thirty-Six Tactics, which is second only to Sun Tzu, was written by Tan Daoji, a general under Liu Yu's command. Tan Daoji's military practice comes from fighting side by side with the lord Liu Yu. Criticism and correction are welcome!