A 38-year-old Hong Kong air-conditioner repairman has died after falling off a building in Kowloon City while working without any protective gear, the South China Morning Post has learned. A source said police received a report at 12.15pm on Tuesday of a man falling from Billionnaire Avant, a high-rise residential block, in Kowloon City. “Earlier in the day, the deceased went to a flat on the 11th floor to repair an air conditioner.