At 8:30 a.m., just as Yiwu International Trade City lifts its shutters, the shop owners are already in their early-bird "8 a.m. drill," chanting their lessons aloud.

Determined to chat up buyers from every corner of the world and lock in big orders, the Yiwu bosses have switched to "multilingual mode."

Netizens exclaim: "In the world's supermarket, the owners are either making money or on the road to learning how!"