Performers of the Yao ethnic group play the traditional Yao trombone at the opening ceremony of the 17th Shenzhen Golden Coast Tourism Festival in Yantian District on Oct. 30. The festival, which will last four months, aims at promoting a healthy lifestyle and protecting the coastal ecology. Various activities will be organized across the district in the coming months. More than 10 million visitors participated in the festival each year for the past 10 consecutive years.