亹 亹 men2
mountain pass; defile (archaic)

亹 亹 wei3
resolute

strokes 22
radical
亠
亠
strokes after radical 19
亹亹 亹亹 wei3 wei3
diligently; relentlessly; pressing forward

亹亹不倦 亹亹不倦 wei3 wei3 bu4 juan4
on and on; relentlessly