Wikipedia
Raktamaritika
Raktamaritika is one of the lost kingdoms of Thai history. Raktamaritika is a Sanskrit name meaning red earth land, while in Chinese records it is named Chi-Tu-Guo (Chinese: 赤土国, pinyin: Chì-tǔ-guó, Chi – red, Tu – earth, Guo – country or state). The Sui Dynasty (581–618) chronicles records an advanced kingdom called Chitu in 607, when Chang Chun was sent as an ambassador there.