The struggle in China between the Manchus and the old Ming Dynasty had been going on for over three centuries when Captain Ansel O’Banion signed his name in blood to the secret oath with the Po Wong Wui and became involved in the Chinese revolutionary movement. The book reveals how O’Banion commanded the secret-training of Chinese in some 21 cities in the United States; how he was initiated into the secret society of the Po Wong Wui; how the Royalists in this country try to take over the revolutionary movement and attempted to assassinate Dr. Sun Yat-Sen; how he smuggled Dr. Sun into this country; how he obtained for General Homer Lea the secret war plans of Japan, upon which Lea based his book, The Valor of Ignorance; how the Chinese trained in this country as officers were smuggled into China where they enlisted as privates in the Royal Manchu Army, ready to take over when the revolution occurred and why, when the revolution finally happened at Double Ten Day (October 10, 1911) as the Chinese call the Tenth Day of the tenth Month, this revolution was the first great, practically bloodless revolution in the history of the world.