Sum Nung or Cen Neng (岑能) was a Peruvian-Chinese martial artist. He was a Grandmaster of the Wing Chun style and the only disciple of martial artist Yuen Kay Shan. At the age of 18, he became famous in Foshan, and is now considered the father of Wing Chun of Guangzhou. Early years Sum Nung was born in Peru in 1926. He was of a Chinese father and a Peruvian mother. When he was about 7 years of age, he traveled to China with the father to visit his grandmother. During his visit, Japan attacked China during the Second World War. The Japanese bombarded their house and his father died, he was then left alone with the grandmother. Communication between the outside as well as within China was terminated. Master Sum lost contact with his mother and his wealthy life, to live poorly as many during the war. When he was about 12 years of age, he was entrusted to work as an apprentice in the restaurant "Sky and Sea'' in the state of Foshan. He had a hard time there since he was often beaten up and humiliated because he was half Chinese and half Peruvian. They made fun of him because of his sharp-pointed and big nose. Career as a martial artist The chef of the restaurant called Cheung Bo was a master of Wing Chun Kung Fu and began teaching him how to defend himself against his assailants. In 1941, the famous Yuen Kay Shan owner of great properties in that state and winner of many death fights/combats, was introduced to Sum Nung. Looking at the master's slim and low physique, Sum doubted his talent and responded that he had nothing to learn from him. Yuen Kay Shan demonstrated and gave him a slight beating, another version was that Yuen placed a raw egg in each of his 2 pockets and challenged Sum to break an egg while he stood in the middle of a circle on the ground, Sum could not break an egg or even push Yuen out of the circle after this Sum was convinced that he could learn a lot from him and became his disciple. Sum Nung developed a great reputation toward the quality of his Kung Fu, he often had to fight to defend himself against the discrimination for being a foreigner. In 1943 he began teaching in Foshan in the