Published: Sep 18, 2020, 02:42 IST | Updated: Sep 18, 2020, 02:42 IST
Dr Li Meng Yan says the Wuhan virus came from a lab. Some scientists say her claims are highly speculative. Twitter has suspended Dr Li's account. Will Twitter use the same yardstuck against Chinese diplomats - who have been caught sharing fake news? Palki Sharma Upadhyay has more.