nèi bù
interior
inside (part, section)
internal
nèi bù jié gòu
internal structure
internal composition
rén mín nèi bù máo dùn
internal contradiction among the people (pretext for a purge)
zhèng què chǔ lǐ rén mín nèi bù máo dùn
On the correct handling of internal contradictions among the people, Mao Zedong's tract of 1957