Lau Soei () was an accomplished teacher of the martial arts in his home village of Wai Yearn (HuiYang) in GuangDong Province, Southern China before meeting Wong Fook Go. Oral traditions suggested that Lau challenged Wong and was soundly defeated by Wong. Lau then became a student of Wong and became proficient in the Chow Gar Southern Praying Mantis. Using this knowledge, he further enhanced his reputation and earned the nickname as the "Number one of the three tigers of Dong Jiang ().