The father of a 3-year-old boy who died on Tuesday from carbon monoxide poisoning in northwest China said strict COVID-19 policies "indirectly killed" his son by causing delays obtaining treatment, in a case that has sparked social media outrage. The boy's death is the latest incident to trigger blowback over China's strict zero-COVID policy, with one critical hashtag racking up 380 million reads on Wednesday on the Twitter-like Weibo platform.