The Tomb of Marquis Yi of Zeng (Chinese: 曾侯乙墓; pinyin: Zēng Hóu Yǐ mù) is an archaeological site in Leigudun Community (擂鼓墩社區), Nanjiao Subdistrict (南郊街道), Zengdu District, Suizhou (during the Spring and Autumn period called Sui County), Hubei, China,[1] dated sometime after 433 BC. The tomb contained the remains of Marquis Yi of Zeng (sometimes "Duke Yi"), and is one of a handful of ancient Chinese royal tombs to have been discovered intact and then excavated using modern archaeological methods. Zeng was a state during the Spring and Autumn period of China. The tomb was made around 433 BC, either at the end of the Spring and Autumn period or the start of the Warring States period. The tomb comes from the end of the thousand-year-long period of the burial of large sets of Chinese ritual bronzes in elite tombs, and is also unusual in containing large numbers of musical instruments, including the great set of bells for which it is most famous.