According to "Tang Yun" and "Ji Yun," pronounced "yu fong cut," same sound as "rong." Refers to the creature called "qī què." The "Classic of Mountains and Seas" states: The Du Mountain's Tumo River flows southeast into the Mian River. In the water, there are many "qī què," which resemble yellow snakes with fish fins. When they emerge from the water, they emit light. Their appearance signals a great drought in that region. The "Commentary" cites "Pian Ya," saying: "Jú shù" and "qī què," with fierce eyes and keen hearing, bite people and are poisonous insects. Guo Pu wrote in "Jiang Fu": The "qī què" vibrates its wings and shines with light.