see 天涯區|天涯区[Tian1 ya2 Qu1]

the other end of the world; a faraway place

border; horizon; shore

career

so close, yet worlds apart (idiom)

The ends of the earth

sea of learning, no horizon (idiom); no limits to what one still has to learn; ars longa, vita brevis

army life (idiom); the experience of war

to roam far and wide (idiom); to travel the world

see 天涯海角[tian1 ya2 hai3 jiao3]

Life is short, learning is limitless; Ars longa, vita brevis