了如指掌

to know sth like the back of one's hand (idiom) / to know (a person, a place etc) inside out

variant of 了如指掌[liao3 ru2 zhi3 zhang3]

(completed action marker) / (modal particle indicating change of state, situation now) / (modal particle intensifying preceding clause)

to finish / to achieve / variant of 瞭|了[liao3] / to understand clearly

(of eyes) bright / clear-sighted / to understand clearly

unofficial variant of 瞭[liao4]

as / as if / such as

finger / to point at or to / to indicate or refer to / to depend on / to count on / (of hair) to stand on end

palm of the hand / sole of the foot / paw / horseshoe / to slap / to hold in one's hand / to wield