The positive impact China has made on the Sudan peace process has been larger than that of any other country despite accusations from the West that it has not done much to stem conflict in the African country, a senior Sudanese official said Wednesday.

"In my opinion, China has played the most positive role (in Sudan) among countries outside the region," visiting Advisor of the President of Sudan, Mustafa Ismail, told reporters at a press conference in Beijing.

In sharp contrast, some Western countries have been playing up the Darfur issue as a conflict between the Arab and the African groups, to impose pressure on the Sudanese government for their own interests, Ismail said.

To that effect, a number of media outlets in the West have distorted the role of China in the Darfur issue, while some politicians have threatened to boycott the Beijing Olympics.

"We should know their tactics," Ismail said.

China's achievement in the Sudan peace process stems largely from its pure and transparent motive, Ismail said.

"China does not have an ulterior motive for being involved in the peace process. It is doing so for peace itself, which has won great trust both from our government and from the Sudan People's Liberation Movement," he said, referring to the major party in the south that signed a comprehensive peace agreement with the government in 2005.