Astronomers from the Shanghai Astronomical Observatory of the Chinese Academy of Sciences, in collaboration with international research institutions, have made a groundbreaking observation using China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST), also known as the "China Sky Eye." For the first time, they detected a complex network of filamentary structures dominated by supersonic turbulence within a high-velocity interstellar gas cloud in the Milky Way. This discovery provides new insights into the evolutionary mechanisms of interstellar matter during the early stages of structure formation.