Get ready to make sacrifices if you want to be an entrepreneur, Alibaba founder Jack Ma said at the grand final of the Jumpstarter 2017 start-up competition in Hong Kong. Ma had plenty of advice for budding entrepreneurs during a fireside chat with Hong Kong Chief Executive Carrie Lam, drawing from experience gained from his 18-year journey turning Alibaba into one of the biggest technology companies in the world. Here are five of his tips.