But one that attracted the most attention concerned the disclosure of civil servants' assets.

In 2005, Han called for the promulgation of a law on disclosure of public servants' property in a motion jointly signed by 30 national legislators.

"To open the assets of government employees to the public is an important way to prevent corruption," said Han.

Over the next six years, he presented the same motion to the NPC Standing Committee every time he attended the annual NPC session.

His efforts finally bore fruit, although a limited one, in 2012 after the Central Committee of Discipline Inspection, the country's top anti-graft organization, promised to step up the disclosure of officials' assets to the public.

"Although the law has not yet been introduced, I have seen the Party and the government taking a stricter attitude to declaration of assets of government officials," said Han Deyun.

"It needs long-term efforts to achieve full transparency. But I'm glad to see the positive changes which have been made."