With an investment of over HK$1.6 million, Adrian Lai and his partner Tiffany Ha ventured into Hong Kong’s century-old flower market last November. “We were optimistic about its business prospects – all shops here are street-front shops, and the pedestrian traffic is bustling,” Lai told HKFP in Cantonese. While Lai has been an entrepreneur for years, Ha is good with cut flowers. The young couple in their 30s opened a shop at the junction of Sai Yee Street and Prince Edward Road West, which showcased blooms and greenery from all over the world: mainland China, the Netherlands, South Africa, Ecu…