in your backyard, The battle for China's backyard

The growing rivalry between America and China will hinge on South-East Asia. But China's bid for dominance in the region is far from assured. Our cover in Asia this week https://econ.st/37OWfai

"中国与拉美贸易大幅增长，从1999年的82亿美元增至2006年的700亿美元。然而，由于拉美在一定程度上一向被视为美国的后院，中国在拉美投资相当谨慎。" in your backyard INFORMAL in the area where you live, or in the area of interest or activity which you are involved in or responsible for: How would you feel about them building a nuclear power station in your backyard? We should take a look at what is happening in our own backyard before criticizing what is taking place in other countries. (from Cambridge Advanced Learner's Dictionary)

back・yard

裏庭; なわ張り; （自分の家の裏庭のような）近い所, 勢力範囲.