Walmart Rethinks Its China ‘Hypermarket’ Strategy Amid Alibaba Gains (Bloomberg) -- In the months before the delta variant upended domestic travel in China, Walmart Inc. would regularly have employees fly to cities like Shanghai to observe and take photos of what its competitors were up to, according to people familiar with company’s practices. At times, they got caught and were asked to leave. While checking out rivals is not uncommon in the industry, the task took on added urgency for the world’s biggest retailer in the past year. A quarter century after it entered China and transformed the way people...