Guangzhou, near Hong Kong, also announced an easing of curbs, but with record numbers of cases nationwide, there seems little prospect of a major U-turn in "zero-COVID" policy that Xi has said is saving lives and has proclaimed as one of his political achievements.Some protesters and foreign security experts believe Wednesday's death of former President Jiang Zemin, who led the country for a decade of rapid economic growth after the Tiananmen crackdown in 1989, might become a new rallying point for protest after three years of pandemic.In one video of those clashes posted on Twitter, dozens of riot police clad in white protective suits and holding shields over their heads, advanced in formation over what appeared to be torn down lockdown barriers as objects flew at them.Reuters verified that the videos were filmed in Guangzhou's Haizhu district, the scene of COVID-related unrest two weeks ago, but could not determine when the clips were taken or the exact sequence of events and what sparked the clashes.EASING CURBSAs well as the easing of curbs in Guangzhou and Chongqing, officials in Zhengzhou, the site of a big Foxconn factory making Apple iPhones that has been the scene of worker unrest over COVID, announced the "orderly" resumption of businesses, including supermarkets, gyms and restaurants."