Hong Kong Broadband Network Limited plans to spend HKD 200 million to expand its Wi-fi coverage across the city to 15,000 hot spots over the next 18 months. The company's aggressive deployment followed its acquisition this week of Y5Zone, a wholesale provider of wireless broadband network services that operates 6,500 hot spots in Hong Kong and more than 600 in selected cities on the mainland. The combined HKBN-Y5Zone Wi-fi network in Hong Kong is 7,000 hot spots.