wield one’s writing brush freely (/with great skill) ? 這位老書法家字寫得～，無(wú)人可與媲美。The old calligrapher wielded his writing brush so freely that no one could be compard with him.
揮灑自如huī sǎ zì rú
揮：揮動(dòng)筆桿；灑：灑墨。比喻作文、畫畫時(shí)隨意用筆，無(wú)拘無(wú)束；也比喻做事從容、老練、沉穩(wěn)。write and draw freely as one wishes, wield one’s writing brush freely