Beijing/Hong Kong CNN  —  The shopfronts are decked out in white, blue and red, with Chinese and Russian flags hanging side by side from the ceiling. Waist-high Russian dolls greet customers at the entrance. Inside, shelves are stocked with an array of Russian goods – from chocolates and cookies to honey and vodka. In China , pop-up stores specializing in Russian-made products have become an increasingly common sight. Their proliferation has left some residents puzzled, with many on Chinese