毫无踪迹
[háo wú zōng jī]
'Hao Wu Zong Ji' (毫无踪迹) translates directly as 'Completely Traceless', which signifies something mysterious or elusive that leaves no signs or evidence of its existence, often implying a desire for anonymity, secrecy, or even suggesting that one does not leave any footprint in the world or that they have completely vanished.