Appearance characteristics of Diptera insects: extremely long neck and tail. The shape of bones makes them lighter than other sauropods, and their hind legs are longer than their front legs, which makes their bodies lean forward slightly. Liang Long's head is longer than other sauropods, his nostrils are close to his eyes, his teeth are short and he eats grass. For example, Liang Long and Super Dragon can be as long as 34 meters. But only one double-chambered dragon with a spine was found, which is estimated to be forty or sixty meters long.