Nothing is going right for Hangzhou at this moment. Walmart will be closing its Zhaohui store in that city on April 23 as a part of its overall plan to dump marginal locations—about 9% of the total—in China. Thanks to the world’s largest retailer, another large block of space in Hangzhou, the capital of Zhejiang province, will go on the market at a time when there is generally too much supply. The problem is especially pronounced in the city’s premium office market. Hangzhou’s Grade A office buildings at the end of 2013 had, according to Jones Lang LaSalle, an average...