difficult (to...) / problem / difficulty / difficult / not good
难
=
又
+
隹
:
Mnemonic symbol: a video game which is almost impossible to beat.
难
=
又
+
隹
:
Just inside the anthill's kitchen, Napoleon and a sparrow are trying to beat an insanely difficult video game. After playing and failing all day long Napoleon finally loses his temper and crashes the game wearing two boxing gloves.
懂
=
忄
+
董
:
Doggy Dog (du) is seeking to understand the inner structure of antiques (董) inside of the engine ((e)ng3). To see the inner structure he smashes the antiques with a flail (忄).