Top Chinese legislator Zhang Dejiang on Thursday promised "unwavering" loyalty to the Communist Party of China (CPC).

Zhang Dejiang (4th R, back), chairman of the Standing Committee of China's National People's Congress (NPC), joins a group deliberation of deputies from Shanxi Province to the annual session of the NPC in Beijing, capital of China, March 10, 2016. (Xinhua/Ding Haitao)

Speaking to lawmakers from Shanxi Province, Zhang, chairman of the National People's Congress (NPC) Standing Committee, said the NPC would "exercise its duty of legislation and supervision in line with major strategies put forward by the CPC Central Committee."

The NPC, China's top legislature, will provide a legal guarantee for the country to complete building a moderately prosperous society in all respects, he added.

Also on Thursday, in a panel deliberation with lawmakers from Jiangsu Province, CPC disciplinary chief Wang Qishan urged local authorities to adapt the policies of the CPC Central Committee to local realities.