驾轻就熟

1. • lit. an easy drive on a familiar path (idiom) fig. experience makes progress easy
2. • a task that is so familiar one can do it with one's hand tied behind one's back

Character by character

• 驾(jià)surname Jia
• 轻(qīng)light
• 就(jiù)then
• 熟(shú)ripe