Yau Lit (; 1864 – 12 December 1936), born Yau Kwai-bok (尢季博), courtesy name Tui-hau (推孝) or Ling-kwai (令季), or Euclid Yau, was a Chinese revolutionary from Shuntak, Kwangtung. He is one of the Four Bandits, together with Sun Yat-sen, Chan siu-bak and Yeung Hok-ling. Early life Yau was born to a family of scholars at Xinjifang, Xingtan, Shunde District, Guangdong. He entered a private school at the age of 5, and was educated under Luk Nam-long (陸南朗), a famous scholar in his hometown, at the age of 10. Luk influenced Yau with his strong sense of distinction between the Manchus and the Hans. Revolution In 1881, the 17-year-old Yau Lit travelled to Shanghai, Incheon, the Three Northeast Provinces and Nanking, joined the Hongmen during the journey and aspired to revolution. When he returned to Kwangtung, he entered the Canton Academy of Mathematics (廣州算學館). Later, he worked at the Mathematics Branch of Shatin Bureau, Kwangtung, and was responsible for drawing the border between China and the then France-occupied Annam. In 1892, Yau worked as a secretary at the Secretariat for Chinese Affairs of Hong Kong. One day, Yau visited Yeung Hok-ling, his classmate at the Canton Academy of Mathematics, and was introduced to Sun Yat-sen, a medical student from Yeung's hometown. Sun then introduced them to Chan Siu-bak, his classmate at the Alice Memorial Hospital. The four frequently met at Yeung Yiu Kee (楊耀記), Yeung's family shop at 24 Gough Street, to discuss a revolution against the Qing dynasty, and were collectively called the Four Bandits by their neighbours. Yau was a member of the Furen Literary Society, which was set up to spread the idea of revolution. He introduced Yeung Kui-wan, the leader of Furen, to Sun, who had already established the Revive China Society in Honolulu, Hawaii. After the Furen Literary Society was merged into the Revive China Society to set up the Hong Kong Chapter of the Revive China Society, Yau participated in plotting the Canton Uprising of 1895. The uprising failed, and Lu Haodong was among the revolutionaries killed by Qing soldiers. Yau had to flee to Saigon. In 1897, Yau returned to Hong Kong to found the Chung-wo Tong (中和堂) in Kowloon to advocate revolution; branches were later founded in Yokohama, Japan and Southeast Asia. Chung-wo Tong was subsequently merged into the Tongmenghui. In 1900 Yau participated in another unsuccessful uprising in Waichow, and had