Where does “*ɟaːŋꟲ” come from?

*ɟaːŋꟲ (Proto-Tai) comes from Middle Chinese 象, from Old Chinese 象 — elephant.

Ancestry of “*ɟaːŋꟲ”, step by step

Step	Language	Word	Meaning
1	Middle Chinese	象	elephant; image, resemblance
2	Old Chinese	象	elephant