FILE - In this Oct. 12, 2018, file photo, a worker walks by a container ship docked at a port in Qingdao in east China's Shandong province. China's factory activity weakened in November, an industry group reported Friday, Nov. 30, 2018, adding to pressure on Beijing ahead of talks between Presidents Donald Trump and Xi Jinping over an escalating tariff battle. (Chinatopix via AP, File)