Visitors take pictures of light show during the Macao Light Festival 2017 at the Ruins of St. Paul's in Macao, on Dec 3, 2017. The Macao Light Festival 2017, an annual event put on by the special administrative region's government, was unveiled at the Ruins of St. Paul's on Sunday night, followed by a string of events and festivals to attract tourists. The 17th century Portuguese Church of St. Paul is among Macao landmarks listed as a UNESCO World Heritage Site.(Photo: Xinhua/Zhang Jinjia)