On Hong Kong Heritage this weekend... As a student, longtime Hongkonger and Australian veteran journalist Luke Hunt first learned about Pham Xuan An, a South Vietnamese who spied for the Communist north during the Vietnam War. An worked as a journalist for Time and Reuters and through propaganda this spy for north Vietnam helped convince the Americans that it was time for their troops to go home. After the Vietnam War ended in 1975, Pham Xuan An became disenchanted with the Communist government but continued to live in Vietnam until his death in 2006. He told Luke that he could write a book about his life, once he was dead. On Hong Kong Heritage this weekend, Luke tells me about his book Punji Trap, Pham Xuan An: The Spy Who Didn’t Love Us. (www.punjitrap.com)