As for the relation between north and south Sudan, Liu recommended the CPA parties, namely the National Congress Party ( NCP) and the Sudan People's Liberation Movement (SPLM), to work together to solve the problems on the way and make compromises for the benefit of the people.

"We hope and we believe that the Sudanese could resolve the problems on the way to peace and political settlement. We hope that the relevant parties, particularly the two parties of the CPA, through their negotiations and through talks and making mutual compromise, could resolve the problems on the way and have a smooth referendum," he said.

The Sudanese government, meanwhile, regarded the visit of the Chinese envoy as a new opportunity to confirm the course of the strategic relation between Khartoum and Beijing, particularly in the coming period where Sudan counts much on the Chinese support for Sudan's current issues.

"Sudan counts much on China to accomplish many challenges in the coming period," Director of the Asian Department at the Sudanese Ministry of Foreign Affairs Fadl Abdalla Fadl told Xinhua.

"There are political issues representing challenges for the future of Sudan, top of them the referendum and the efforts of peaceful settlement to the Darfur crisis, and therefore, to face these challenges, we need the support of our friends in China," he added.

Liu also participated in a retreat meeting, organized by the United Nations-African Union Mission in Darfur (UNAMID) in El Fasher, North Darfur State.

The meeting, which brought together special envoys to Sudan and representatives of regional and international organizations, discussed the latest developments in the Darfur issue together with means and ways to enhance the Darfur political process and the coordination between Sudan government and UNAMID to ensure delivery of humanitarian assistance to the needy.