Tuogu (Pinyin: tuó gǔ) is a drum made of skin. Its sound is like a chirping. ; the sound of chirping. ("Tuo" is also known as "Chinese alligator", "Tuolong", "Pigpolong", and its skin can be covered with drums.)
[Tang Dynasty] Wen Tingjun's "Kunming Water Control Poetry": "The drum and the drum are three times to report to the emperor, and the eagle flag beast ship rushes up."
Emperor Zhuanxu was one of the five emperors in ancient China (Huangdi, Diku, Tang Yao, Yushun, Zhuanxu), and was known as the emperor of water virtue in the north.