Foreign Ministry spokesman Guo Jiakun confirmed on Thursday that Chinese experts have visited Japan again to conduct independent sampling and monitoring of the discharge of Fukushima nuclear-contaminated water into the sea.

From Wednesday to Friday, under the organization of the International Atomic Energy Agency, experts from many countries, including China, independently collected samples of nuclear-contaminated water to be discharged and seawater from the discharge facilities of the Fukushima Daiichi Nuclear Power Plant and its adjacent waters, Guo told reporters at a daily news briefing on Thursday.

They also participated in the collection of marine biological samples, he said, adding that all these actions are specific steps for Japan to implement its commitments regarding the ocean discharge of nuclear contaminated water.

The spokesman said that the international monitoring of the ocean discharge and China's independent sampling and monitoring will continue, and China will promptly release the latest progress in this regard.

In another development, Guo said that professional research institutions in China are conducting rigorous and independent testing and analysis of the marine biological samples collected by Chinese experts, adding that China will promptly release the relevant results.

The sea discharge of Fukushima nuclear contaminated water is a complex issue that involves multiple aspects and requires a high level of professionalism, Guo said.

According to the spokesman, Chinese experts, under the organization of the IAEA, have collected various types of samples to scientifically and comprehensively assess the impact of the ocean discharge.

Guo said samples included those from the sea area near the discharge outlet, seawater, marine organisms, and the nuclear-contaminated water to be discharged from the nuclear power plant's discharge facilities.

"China will work with the international community to continue improving the relevant arrangements," he said.