Bloomberg’s Rosalind China reports on land purchases in China by foreign retailers.   Wal-Mart Stores Inc., the world’s largest retailer, bought sites in northeastern Dalian for the first time last year, while Inter Ikea Centre Group, the developer part-owned by Sweden’s Ikea Group, invested $1.2 billion to build 510,000 square meters (5.5 million square feet) of malls as the largest home-furnishings company expands in the world’s fastest-growing major economy.