Joint tombs of boat-shaped coffins

The joint tombs of boat-shaped coffins (Chinese: 成都古蜀船棺合葬墓; pinyin: Chéngdū Gǔ Shǔ chuánguān hézàngmù; lit. 'Chengdu ancient Shu boat coffin joint burial tomb') are tombs of the ancient kingdom of Shu discovered in Chengdu, Sichuan, China, coinciding with the Spring and Autumn period (770–476 BC) and the Warring States period (476–221 BC).