Suvarnabhumi

Pali: Suvaṇṇabhūmi — is the name of a land mentioned in many ancient Buddhist sources. Meaning “Land of Gold”, it is thought to refer to Insular Southeast Asia or to Southern India.

in Thailand, the ancient land of Survarnamubhumi or Suvannabhumi in the Pali-Buddhist language, is believed to include all of Myanmar (Burma), Thailand, Laos, Cambodia, and the South of Vietnam and China.
— https://www.youtube.com/watch?v=bVwt_sYQ3V0