sharp; keen; acute; incisive; penetrating; perceptive

to sharpen

firm determination

acute determination; dauntless

acute; astute; perceptive

keen; sharp; acute

sharp; intense; penetrating; pointed; acute (illness)

elite (e.g. troops); crack; best quality personnel

cutting-edge (in technology, science, fashion, the arts etc); novel and competitive; new and dashing

Yang Rui (1855-1898), one of the Six Gentlemen Martyrs 戊戌六君子 of the unsuccessful reform movement of 1898; Yang Rui (1963-), host of "Dialogue" on CCTV News