穴

xue

hole, cave,

acupuncture point

roof/dwelling (mian) + split open (ba)

Imagine a tiny house (宀) built on a mountain.
Below the roof, there's a split (八) in the ground—an entrance to a secret cave.

牙

ya

tooth

a molar is a tooth that grows in the corners of the mouth

穿

chuan

penetrate, pass through

wear (clothes)

cave (xue) + tooth (ya)

a molar penetrates gums creating a kind of a cave; one also wears clothes by "penetrating" through sleeves and trouser legs

囱 / 囪

cong

chimney

the vent on the roof of the house will help Trinity to escape; older form is 囪

窗

chuang

window, shutter

cave/hole 穴 [xué] + chimney/vent 囱 [cōng]

a hole (穴), bigger than a vent for a chimney is a window

工

gong

work, labor

tool, anvil (nakovanj)

An I-beam in construction (symbolizing industry)

空

kong

air, sky, empty, void; to vacate

cave 穴 [xué] + tool/work 工 [gōng]

a cave (穴) dug out with tools (工), the void inside only filled with air

犬

quan

突

tu

to dash, to break through

suddenly, abruptly

to protrude

cave 穴 [xué] + dog 犬¹⁷²[quǎn]

out of a cave- (穴) a dog (犬) suddenly dushed out