Huailai county in Zhangjiakou, North China's Hebei province, is renowned for its traditional folk instruments industry, such as Hulusi, a type of Chinese flute, Xun, a Chinese wind instrument made of pottery and guzheng, the so-called Chinese zither.
They have used technology to study bone flutes, carbonized rice and animal bones unearthed at the site in Wuyang county, Henan province, and along the way identified its importance to the birth of music, agriculture, animal husbandry and written characters in China.