Ordinary mucus

Doctor Yin Xuan first offers warehouse earth shell snail mucus: fluid left as the desolate beast earth shell snail crawls, with two or three portions in stock. Fang Yuan rejects that stock and names what he needs as earth shell snail star night mucus, not ordinary mucus. ^{ch. 930}

Earth shell snail mucus must be sealed and stored within ten breaths, or the fluid dries and loses its effect. Star night mucus is produced by processing the ordinary mucus on the spot with Fang Yuan’s special methods: processing takes seven breaths, and sealing after that must finish within three breaths. Because of those windows, he insists on entering Earth Trench rather than relying on stored ordinary mucus. ^{ch. 930}