et al. Proc. Nat. Acad. Sci. USA (2007).Prehistoric jade merchants spreading material from a single Taiwanese source may also have spread Austronesian languages throughout a huge area of Southeast Asia Three-pointed jade ornaments called lingling-o have been found in southeastern Taiwan, and also all the way out to the Philippines, eastern Malaysia, southern Vietnam, central and southern Thailand, and Cambodia.
Hsiao-Chun Hung, at the Australian National University in Canberra, and her colleagues used an electron microprobe to determine elemental composition and found 116 of 144 jade ornaments from across the 3,000-kilometre-wide region came from the Fengtian jade deposit in eastern Taiwan.