Where does “ㄜ” come from?

ㄜ (Translingual) comes from Translingual ㄛ, from Chinese ?.

Ancestry of “ㄜ”, step by step

Step	Language	Word	Meaning
1	Translingual	ㄛ	—
2	Chinese	?	—

ㄜ — Etymology, Origin & Word History | Etymology Explorer