Pedestrians cross Russell Street in front of the Times Square shopping mall, operated by Wharf (Holdings) Ltd., in the Causeway Bay shopping district of Hong Kong, China.

One of Hong Kong's busiest shopping streets winds past the Times Square center, under slick signs for brands like Mont Blanc, Cartier, Gucci and Burberry.

But inside the towering luxury mall, the hum of the crowds below fades into the quiet of rows of mostly empty boutiques.