Keyword
carry
Info
FrequencyTop 300-400
Type
Kyōiku (3rd grade) 
?
KankenLevel 8
Heisig325
Readings
うん
(67%)
はこ
(32%)
Composed of
army
road
Mnemonic

An army on the road carrying weapons and supplies.

Used in vocabulary (575 in total)
to carry; to transport; to come; to go; to use (a brush, chopsticks, etc.); to move
fate; destiny; lot
exercise; physical training; appeal; campaign; motion; movement
Examples (200 in total)
Anyway, if there are a lot of books, carrying them is tough.
Of course, things did not go that easily.
It's probably because they used to carry and move things themselves.