Campers and hikers have urged Hong Kong authorities to step up public education, law enforcement and impose foot traffic limits at campsites after some areas were flooded with visitors during the Lunar New Year holiday. A visit by the South China Morning Post on Saturday to Ham Tin Wan, a beach in Sai Kung, found about 50 visitors and 30 tents. Empty plastic bottles, used tissue paper and chocolate wrappers were seen lying on the sand and in bushes and shrubs. Officers from the Agricultural,...