In the fourth of our series of previews on the five-year plan and policy address, to be announced on September 16, Fiona Sun and Edith Lin analyse how to improve livelihoods in the city by tackling the impact of demographic changes and technological advancement. Read part one here, part two here and part three here. Twenty-eight-year-old Hong Kong resident Fong and his wife want to have a child but he knows they cannot afford one for now. He earns about HK$10,000 (US$1,275) a month as a...