inputs: hypothesis: Liu Jianchao is an employee of China's foreign ministry. premise: China immediately expressed regret over his decision and suggested that "ulterior motives" may be at play. "It is understandable if some people do not understand the Chinese government policy on Darfur, but I am afraid that some people may have ulterior motives, and this we cannot accept... China is also concerned about the humanitarian situation in Darfur. [But] empty rhetoric will not help. We hope that relevant people will be more pragmatic," said Liu Jianchao, the Deputy-Director General of the Information Department in China's foreign ministry.