Clark Tang Clark Tang’s grandparents, You Long and Cheark Ung, when they were just starting their family, Phnom Penh c. 1940. As far as the family knows, the great grandfather came to Cambodia to escape conscription into the Chinese army, probably in the 1800’s. He had no funds, managed to find work, marry and buy a farm. His farm exported tobacco and corn to Vietnam. Clark learned of this on a trip back to Cambodia when he discovered that his family still held several properties.