1 2021-04-14 15:07:02chinadaily.com.cn Editor : Cheng Zizhuo ECNS App Download Sea Bull IIbored a core of 231 meters more than 2,000 meters below the surface of the South China Sea on Wednesday, setting a new world record. (Photo by Jin Yongping/For chinadaily.com.cn) China's deep-sea drilling system Sea Bull IIbored a core of 231 meters more than 2,000 meters beneath the surface in the South China sea at around 11 pm Wednesday, setting a new world record. Sea Bull II, a project of China's National Key R&D Program, is also the country's first deep-sea drill with a depth of more than 100 meters with a pressure coring function.