The Chinese idiom "亦步亦趋" is formed through a repetitive parallel structure where "亦" (meaning "also") is paired sequentially with two verbs: "步" (to walk) and "趋" (to hurry), creating the literal sequence "also walk also hurry". This construction originates from a narrative in the ancient text "Zhuangzi", where a disciple precisely mimics his master's actions, thus the phrase directly combines these elements to depict the act of close imitation through the concrete actions of walking and quick stepping.