China urges Japan to adopt a responsible attitude towards the marine environment and human life and health. The process of discharging contaminated water into the sea will last 30 years or more. Nearly 70% of the nuclear contaminated water treated by the multi-nuclide treatment system still does not meet the discharge standards. The international community has every reason to express its concern and dissatisfaction with these uncertainties, Wang Wenbin said.. Beijing, 7 Jul (Zhongxin Net) -- Chinese Foreign Ministry spokesman Wang Wen bin presided over a regular news conference on 6 July.