From mass tests to lockdowns, China is on high-alert to keep the coronavirus at bay ahead of the Winter Olympics. WSJ examines the zero-Covid strategy in the city of Xi’an to see how it has sparked backlash from residents and affected chip makers. Photo: Shao Rui/Zuma Press, Fabrizio Bensch/Reuters More from the Wall Street Journal: Visit WSJ.com: http://www.wsj.com/ Visit the WSJ Video Center: https://wsj.com/video On Facebook: https://www.facebook.com/pg/wsj/videos/ On Twitter: https://twitter.com/WSJ On Snapchat: https://on.wsj.com/2ratjSM #China #2022Olympics #WSJ