Li Ka-shing’s Cheung Kong Infrastructure (CKI) has struck its first significant non-cement investment in mainland China in over a decade, in a rare move by the tycoon – known affectionately as Hong Kong’s ‘Superman’ for his deal making prowess – who in recent years was forced to rebut accusations his family was bailing out from the motherland.CKI, now chaired by Li’s eldest son Victor Li Tzar-kuoi, has signed an agreement to set up a venture with Shenzhen-listed Jilin Power, a unit of State…