司空见惯

a common occurrence (idiom)

surname Si

to take charge of / to manage / department (under a ministry)

empty / air / sky / in vain

to empty / vacant / unoccupied / space / leisure / free time

to see / to meet / to appear (to be sth) / to interview / opinion / view

to appear / also written 現|现[xian4]

accustomed to / used to / indulge / to spoil (a child)