Mujinjang (無盡藏) joins mujin (無盡, "never running dry") with jang (藏, "storehouse"). In Buddhism it was a profound philosophical term for boundless virtue — the dharma-meaning (法義) of the Buddha that no amount of practice could exhaust, truth without end. The Vimalakirti Sutra teaches that "to help the poor and suffering is itself to practice the mujinjang." Temples even ran a kind of public fund for aiding the needy, called mujinjae (無盡財) or mujinjang-won (無盡藏院); begun in the Tang dynasty, it flourished greatly in Goryeo. The name meant a storehouse that gives without ever running out. That deep philosophical and charitable sense has faded, and today only the notion of quantity — "an enormous amount" — remains. So when we say something is "mujinjang plentiful," we are quietly borrowing the boundless virtue of the Buddha.