Authorities in central China are looking into charges that residents looking to petition the government have been held and mistreated in local "discipline centers."
Chinese Foreign Minister Wang Yi said on Friday that China will never allow chaos or war on the Korean Peninsula.
US Secretary of State John Kerry arrived in Beijing on Friday morning, starting his two-day visit to China.
Chinese President Xi Jinping met with Hungarian Prime Minister Orban Viktor on Thursday and they pledged to boost cooperation between the two countries.
Chinese President Xi Jinping has made instructions to the army, calling for further implementation of China's "mass line" guideline.
The former Party chief of Guyuan county in Hebei province has been sentenced to 17 years in prison for corruption and possessing a large amount of property from undisclosed sources, the Shijiazhuang Intermediate People's Court said.
Premier Li Keqiang and Hungary's leader have reached a "broad consensus" on issues that include a railway upgrade project.
China's leading security body has made public 10 cases of police officers, prosecutors or judges being punished for transgressions ranging from bribe-taking and drunken driving to homicide, as part of an intensified effort to fight corruption and improve work style.
Premier Li Keqiang has pledged to return more authority on investment issues to the market this year, as a method to reduce government intervention and cast off corruption.
The Commission for Political and Legal Affairs of the Communist Party of China (CPC) Central Committee has publicized 10 typical cases of disciplinary or legal violations by police officers, judges and prosecutors.
Chinese Premier Li Keqiang on Tuesday pledged to combat corruption, boost government transparency and build a clean government.
Chinese Premier Li Keqiang has urged strict budget management of all government income and payment records while calling on auditors to thoroughly probe violations.