Significant achievements have been made in the joint voyage of the Tansuo-1 (Explorer-1) and Tansuo-2 (Explorer-2) research vessels in the northern part of the South China Sea with 66 cultural relics discovered, according to the Institute of Deep-sea Science and Engineering under the Chinese Academy of Sciences.

According to researchers, three ship hulls and multiple glaze jars were found at an underwater site located at a depth between 2,000 and 3,000 meters. 

This is the first time the country's underwater archaeological excavation has crossed the depth of 1,000 meters, a record set in 2018.