Blowpipe grass

Blowpipe grass is the specialty of northern plains. Every stalk looks like an erect long pipe. When wind blows, it enters small holes on the grass and produces pleasant pipe sounds. It is a common material used in Gu refinement. A large expanse of blowpipe grass slowly gives birth to some sound path and wood path Gu worms. ^{ch. 476}

South Sea Turtle Immortal lists ten thousand stalks of blowpipe grass as the asking price for a turtleback myriad wolf king on sale. Fang Yuan has none at the time. He knows where they grow, but that season they are only seeds buried under the earth. The seller later accepts immortal essence stones instead. ^{ch. 476}