Where does “*siəŋᴬ¹” come from?

*siəŋᴬ¹ (Proto-Southwestern Tai) comes from Middle Chinese 聲 — sound, voice.

Ancestry of “*siəŋᴬ¹”, step by step

Step	Language	Word	Meaning
1	Middle Chinese	聲	sound, voice

*siəŋᴬ¹ — Etymology, Origin & Word History | Etymology Explorer