Packages move along a conveyor at an Amazon fulfillment center on Cyber Monday in Robbinsville, New Jersey, U.S., on Monday, Nov. 29, 2021. Amazon is making a fresh appeal to China-based sellers as it fends off growing competition from discount online retailers Temu and Shein, which both have roots in the world's second-largest economy. At a conference that began Tuesday and runs through Friday, Amazon said it plans to open an "innovation center" near Shenzhen, a hub for technology companies and cross-border e-commerce that's often referred to as China's Silicon Valley. Amazon said it will "promote sellers in the Asia-Pacific...