Pinyin final: "ao1"

Scene setting: in the background there is a massive, colossal organic pipeline resembling a human aorta arching across a vast red sand desert. The structure is deep crimson with visible branching capillaries and a wet, glistening muscular texture. It emerges from and disappears into the sand dunes like a petrified biological mega-structure. The environment features a hazy ochre sky, scattered bleached skeletal remains of desert flora, and sharp, rippling sand dunes. The lighting is harsh and directional, casting deep shadows that emphasize the pulsating, ridged surface of the organic conduit.