FILE - In this Sept. 27, 2018, file photo, Lenovo chairman and CEO Yang Yuanqing delivers a keynote speech during the Lenovo Tech World summit in Beijing. Chinese tech stocks Lenovo Group and ZTE Corp. have tumbled in Hong Kong following a news report Chinese spies might have used chips supplied by another company to hack into U.S. computer systems. (AP Photo/Mark Schiefelbein, File) Mark Schiefelbein / TT NYHETSBYRÅN