鼍tuó refers to a reptile with a short snout, a body more than two meters long, and scales on its back and tail. They live in caves on the banks of rivers, and their skin can cover their drums. Also known as "Alligator", "Motor Dragon", "Zhu Po Dragon", and Earth Dragon.
There are records about the turtle as early as Oracle.
In "Daya·Lingtai" of the "Book of Songs", a collection of poems from the Spring and Autumn Period, there is also a poem about "guns and drums fluttering". This means that when the shrew calls, it makes a "bang, bang" sound like a drum.
There are records about alligators in classics such as "Shuowen Jiezi" by Xu Shen of the Eastern Han Dynasty, "Natural History" by Zhang Hua of the Western Jin Dynasty, and "Compendium of Materia Medica" by Li Shizhen of the Ming Dynasty.
In "The Classic of Mountains and Seas·Zhongci Jiujing", in Minshan, the river flows out of the Yan Mountain and flows into the sea from the northeast. There are many good striders and many foxtail millet.
"Mao's Poems: King Wen's Lingtai" The drums and drums meet each other.
"Book of Rites·Yue Ling" In the autumn month of the season, we cut down the dragons and catch the foxes.
"Shuowen" The turtle is a water insect, like a lizard, and is as long as a tortoise.
"Ji Zhong Zhou Shu·Wang Hui" Kuaiji uses the 鼍.
(Note: Its skin can be crowned and drummed)