Chinese Cambodians or Sino-Khmers, are Cambodian citizens of Chinese or partial Chinese descent. The Khmer term Khmer Kat Chen (ខ្មែរកាត់ចិន, Khmê Kăt Chĕn) is used for people of mixed Cambodian and Chinese descent while Chen Khmer (ចិនខ្មែរ, Chĕn Khmê) can mean Cambodian-born citizen of Chinese ancestry. Khmer people constitute the largest ethnic group in Cambodia among whom Chen means "Chinese". Contact with ethnic Chinese people such as envoys, merchants, travelers and diplomats who regularly visited Indochina verifiably existed since the beginning of the common era. However the earliest record of an ethnic Chinese community in Cambodia dates to the 13th century. As a result of a century-long settlement history people with mixed Chinese and Khmer ancestry account for a sizable portion o