来无影，去无踪 (來無影，去無蹤) lái wú yǐng, qù wú zōng

lái wú yǐng, qù wú zōng phrase come without a shadow, leave without a footprint; to come and go without a trace
Domain: Proverb 谚语
Notes: (CC-CEDICT '來無影，去無蹤')