Chinese authorities have warned Shanghai residents from posting about the Covid lockdown. Since the lockdown was imposed in the city of 25 million people, residents have been complaining about food shortages and lack of access to medical care. The lockdown was imposed due to a spike in cases in the financial hub. About 90% of new cases in China have been recorded in Shanghai. Related: Chinese social media censors lockdown complaints On Friday, Shanghai’s internet watchdog warned residents against posting about the lockdown, encouraging them to “distinguish rumors from facts.” Since the start of the lockdown, there have been numerous…