Canada's public broadcaster CBC says it is closing its China bureau after the Chinese government ignored requests to base a reporter in Beijing. CBC said its applications had been met "by months-long silence from Chinese officials." The broadcaster's last correspondent left Beijing as China closed down amid the COVID-19 pandemic in 2020. The bureau, located in one of Beijing's high-security diplomatic compounds, had remained open in anticipation of re-staffing. On Thursday, a plaque identifying the bureau remained posted on the outside wall but no one responded to knocks and doorbell rings. Calls to the bureau's number published by the Chinese…