困难在于 kùn nán zài yú

DEFINITIONS

  1. the problem is...

CHARACTERS

困 kùn
HSK 4
to surround, besiege; to be surrounded; difficult
难 nán
HSK 3
difficult, arduous, hard; unable
在 zài
HSK 1
be at, in, on; consist in, rest
于 yú
HSK 3
in, on, at; go to; surname