BEIJING, July 16 -- China's anti-graft chief vowed on Wednesday to maintain a "high-voltage" crack down on corruption and resolutely contain the spread of corruption.

Wang Qishan, secretary of the Central Commission for Discipline Inspection of the Communist Party of China, asked anti-graft inspectors to get ready for a new round of inspection.

The official urged inspectors to watch closely over corruption in mining, natural resources, land transfer, real estate development, construction projects, public and special funds.

He underlined persistent efforts to address improper work styles.

Wang asked inspectors to uncover malpractices such as the buying and selling of official positions and address "naked officials", those whose spouse and children have emigrated.

After the 18th CPC National Congress in late 2012, China launched an anti-graft campaign, which targeted both "tigers and flies", referring to high and low ranking corrupt officials.

Dozens of ministerial-level officials have been probed for corruption since the congress.

Anti-corruption authorities will soon begin a second round inspection in 10 provincial-level regions. They include Guangxi, Shanghai, Qinghai, Tibet, Zhejiang, Hebei, Shaanxi, Heilongjiang, Sichuan and Jiangsu. They are also scheduled to inspect the General Administration of Sport, the Chinese Academy of Sciences, and the First Automotive Works Group Corporation.