The photo shows a fragment of silver piece with Chinese characters Wan Sui (longevity) and Duan Zhou (present-day Zhaoqing in Guangdong province) excavated at San Tau on Lantau Island, Hong Kong.

The photo shows a fragment of silver piece with Chinese characters Wan Sui (longevity) and Duan Zhou (present-day Zhaoqing in Guangdong province) excavated at San Tau on Lantau Island, Hong Kong.

The photo shows a fragment of silver piece with Chinese characters Wan Sui (longevity) and Duan Zhou (present-day Zhaoqing in Guangdong province) excavated at San Tau on Lantau Island, Hong Kong.