Constant wave sound

In Dragon Whale Paradise, Fang Yuan asks Shen Cong Sheng for a portion of constant wave sound in exchange for explaining how he gained many merit points. Shen Cong Sheng tosses him a palm-sized conch that is itself a desolate beast. ^{ch. 1895}

A wave sound stored in the conch is a sound path rank seven immortal material and a specialty product of Shen clan; it can produce sounds for years without stopping. Fang Yuan inspects it, finds nothing suspicious, and places the immortal material in his sovereign immortal aperture. ^{ch. 1895}

Shen clan’s constant wave sound is unique in the world. After Fang Yuan’s answer, Shen Xiao notes that one answer earned him a rank seven immortal material unique to Shen clan, and Shen Cong Sheng later says Fang Yuan obtained the constant wave sound through his wits. ^{ch. 1895}