A sea change is taking place in China’s venture capital (VC) industry as the two-decade marriage between US investors and mainland start-ups comes to an end, casting a shadow over the country’s technology landscape, according to industry insiders and market data.While US dollar funding from global investors, brokered by a generation of Chinese dealmakers who shuttled back and forth across the Pacific, facilitated the rise of the country’s most successful tech firms over the past decade, the mone...