The proximity effect of binuclear metal atoms breaks through the limitations of conventional mononuclear metal atoms to catalyze more complex catalytic systems. Recently, Niu et al. reported a novel binuclear complex with biomimetic Zn–Zn site achieving recycling of polyester plastics under mild conditions. The proximity effect of binuclear metal atoms breaks through the limitations of conventional mononuclear metal atoms to catalyze more complex catalytic systems. Recently, Niu et al. reported a novel binuclear complex with biomimetic Zn–Zn site achieving recycling of polyester plastics under mild conditions.