The ruling Communist Party had largely relied on the medical community to justify its tough lockdowns, quarantine measures and mass testing, almost all of which it abruptly abandoned last month, leading to a surge in new cases that have stretched medical resources to their limits.The company “will continue to increase the investigation and cleanup of all kinds of illegal content, and create a harmonious and friendly community environment for the majority of users," Sina Weibo said in a statement dated Thursday.Beijing also plans to drop a requirement for students at city schools to have a negative COVID-19 test to enter campus when classes resume Feb. 13 after the holiday break.The World Health Organization has also expressed concern about the lack of data from China, while the U.S. is requiring a negative test result for travelers from China within 48 hours of departure.Meanwhile, Hong Kong also plans to reopen some of its border crossings with mainland China on Sunday and allow tens of thousands of people to cross every day without being quarantined."