HONG KONG, July 17, 2016 (Xinhua) -- Colleagues of Thomas Cheung salute to pay their last tribute to him during his funeral held at the Universal Funeral Parlor in Hung Hom in south China's Hong Kong, July 17, 2016. An official police funeral with full honor was held here Sunday for Thomas Cheung, a 30-year-old senior station officer who died while battling fire in an industrial building in Hong Kong's East Kowloon on June 25, 2016.(Xinhua/Ng Wing Kin)