China's third highest-ranking official Zhao Leji will visit North Korea this week, Beijing says, as the two countries mark 75 years of diplomatic ties. Zhao, who is a member of the Standing Committee of the Chinese Communist Party's Politburo and China's top lawmaker, will lead a delegation on an "official goodwill visit from April 11 to 13", foreign ministry spokesperson Mao Ning says. IMAGES AND SOUNDBITES