A Filipino teenager has drowned after losing his balance while walking on a bridge and falling into the sea off an outlying island in Hong Kong, the South China Morning Post has learned.According to a source, the 17-year-old boy, who holds a Hong Kong identity card, was chatting with two friends while sitting on the railings of Chau Tsai Bridge on Peng Chau on Friday evening.At around 7.18pm, he stood on the railings and walked a few steps before losing his balance and falling into the sea,...