Firefighters have extinguished a blaze at the Chinachem Tower in Hong Kong’s central business district after a battle that lasted for more than four hours, with at least four people injured. Huge flames erupted when the scaffolding along the building caught fire on Saturday afternoon, sending up thick plumes of smoke that were visible from Kowloon across Victoria Harbour. At least four people were rescued after being trapped inside the tower. According to authorities, 36 firefighting vehicles,...