他上下看了看。
Tā shàngxià kàn le kàn.
English
He looked up and down.
up and down; above and below
the top and bottom of sth; the full vertical extent of sth; from top to bottom; to go up and down
Every character draws itself stroke by stroke, then hands you the brush to trace it yourself.
Nice writing!
他上下看了看。
Tā shàngxià kàn le kàn.
He looked up and down.
楼梯上下都有人。
Lóutī shàngxià dōu yǒu rén.
There are people above and below the stairs.
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.