Storyline: Smart, light home fitness gear gets popular in China [Voice_over] It's not your parent's ab wheel. These new and improved pieces of exercise equipment at a stall in central China's Yiwu City are selling like hot cakes this summer. Merchants at Yiwu, known the world's largest small commodities hub, say newer ab rollers have more padding for your arms, a space to hold your phone, and Bluetooth capabilities. [Sound_bite] Xu Guochao, seller, Yiwu International Trade City: "Like this one is a new product. Sales in a one-month period are up to about 40,000 units, which is 40 percent to 50 percent more than older models." [Voice_over] Live streamers who sell the devices for the companies that make them say nowadays people are prioritizing workouts that don't require a gym membership. [Sound_bite] Lv, purchaser: "We do e-commerce livestream sales, and we will pick goods based on customers' needs. Many people don't have time to go to fitness centers. They are choosing to do their abdominal exercises at home." [Voice_over] Last year, the country's National Health Commission together with multiple other departments launched a three-year weight management initiative, aiming to foster public support for healthy eating, and being physical active. [Restrictions : No access Chinese mainland]