+2 = 4

ㄧㄡˊyóu

ㄧㄡˊyóu
+2 = 4

ㄧㄣˊyín

ㄧㄣˊyín
to go forward, to advance, (bound form)​ mostly used in either 冘豫[you2 yu4] or 冘疑[you2 yi2]
weitergehen (V)​