锋芒内敛

to be talented yet self-effacing (idiom)

point of a spear / edge of a tool / vanguard / forward (in sports team)

tip (of pencil, spear etc) / sharp point / cutting edge / spearhead / vanguard

awn (of cereals) / arista (of grain) / tip (of a blade) / Miscanthus sinensis (type of grass) / variant of 邙, Mt Mang at Luoyang in Henan

inside / inner / internal / within / interior

introverted / reserved / (artistic style) understated

to hold back / to restrain / to control (oneself) / to collect / Taiwan pr. [lian4]

variant of 殮|殓[lian4]