Yi Li (Etiquette and rites) wooden slips unearthed at Mozuizi in Wuwei, Gansu, are noted for their neat handwriting. (Collection of Gansu Provincial Museum)

Yi Li (Etiquette and rites) wooden slips unearthed at Mozuizi in Wuwei, Gansu, are noted for their neat handwriting. (Collection of Gansu Provincial Museum)

Yi Li (Etiquette and rites) wooden slips unearthed at Mozuizi in Wuwei, Gansu, are noted for their neat handwriting. (Collection of Gansu Provincial Museum)