Clark Tang Clark Tang and his maternal grandmother, You Long, at the Khao-I-Dang refugee camp in Thailand, c. 1980. She adopted Clark when he was 1 or 2 years old and cared for him as a son (NOTE: in Cambodia it is not uncommon for a family member to become the primary caregiver of an extended family member even if their nuclear family is still living) . His grandmother lost many family members, including three sons, during the Khmer Rouge period. After the Vietnamese entered Cambodia in 1979, she wanted to leave the country. Clark’s mother and father wanted to stay, so, he went with his grandmother to the refugee camps in Thailand.