Zhangu

Zhangu has many different sizes according to its functions, generally, the diameter of the drumhead are 270mm, 330mm, 400mm, 460mm and 540mm and the height of the drum are usually 170mm, 200mm, 240mm, 300mm and 340mm.

The drumhead is usually made of wood and leather; there are 2 to 4 metal rings at the waist of the drum.

The Mongolian war drum was called Guangu (罐鼓) in the ancient times, also known as Dagu (大鼓) or Jungu (军鼓).

Mongolian war drum has long history dating back to Genghis Khan (1162-1227), it had been popularly used for ritual ceremony and warfare.

The Italian traveler and merchant Marco Polo wrote in his The Travels of Marco Polo about the Mongolian military matters: "before they go to a battle, all soldiers wait for the sound of the Guangu from their commander.