wield one’s writing brush freely (/with great skill) ❍ 这位老书法家字写得～，无人可与媲美。The old calligrapher wielded his writing brush so freely that no one could be compard with him.
挥洒自如huī sǎ zì rú
挥：挥动笔杆；洒：洒墨。比喻作文、画画时随意用笔，无拘无束；也比喻做事从容、老练、沉稳。write and draw freely as one wishes, wield one’s writing brush freely