China has expressed serious concern over Japan's plan to discharge contaminated radioactive wastewater from Fukushima Prefecture into the sea. Japan is moving forward with plans to release tons of treated wastewater from the stricken Fukushima plant into the ocean. Japanese Cabinet ministers approved the move early Tuesday. The government says the actual disposal won't begin for another two years. Right after Japan's announcement, the government of the Republic of Korea (ROK) also expressed "strong regret" over Tokyo's decision.