China’s new badminton chief has vowed to crack down on corruption and “purge industry chaos” after being appointed to replace two-time Olympic gold medallist Zhang Jun. Zhang Jun, the former president of the Chinese Badminton Association (CBA), has not been seen for months after being accused in April of “serious violations of discipline and law”. On Tuesday, the CBA said Zhang Xin – an official from China’s General Administration of Sport – would be the new president. The governing body would,...