China says its zero-COVID policy is the best, most cost-effective, will improve

China's COVID-19 measures are the best, most cost-effective and will continue to improve, a spokesman for the ruling Communist Party said on Saturday. 'We firmly believe that the light is ahead and perseverance is victory,' Sun Yeli told a news conference in Beijing ahead of the party's 20th congress. Sun was responding to a question about whether China risks being isolated from the rest of the world if it continues with its zero-COVID policy.