Hong Kong bets the future on a vast tech zone by China’s border

In a village on Hong Kong’s outskirts, Wong Chin Ming inspects zucchini, watermelons, cherry tomatoes and kale growing in his greenhouses. For 19 years he’s been raising crops here on the site of what was once a factory. Soon his farm will be wiped off the map to make way for a massive development, which China hopes will be Hong Kong’s answer to Silicon Valley. The government is setting aside 300 square kilo­meters (116 square miles) for the project, an area more than twice the size of San Francisco.