They will attend the Fourth Summit of the Conference on Interaction and Confidence Building Measures in Asia (CICA) to be held from May 20 to 21 in Shanghai, Qin said.
Putin will pay a state visit to China from May 20 to 21 at the invitation of Chinese President Xi Jinping, while President Hassan Rouhani's visit is scheduled from May 20 to 22, Qin said, according to Xinhua.
As a guest of the Chinese government, UN chief Ban Ki-moon will pay an official visit to China from May 18 to 22, said Qin.