Complex sentence: Port Island (or Chek Chau, 赤洲), one of the 235 islands of Hong Kong, under the administration of Tai Po District, is located in Tolo Channel (赤門海峽), where is in the North-east of New Territories (新界).
Split into simpler sentences: Port Island (or Chek Chau, 赤洲) is one of the 235 islands of Hong Kong, under the administration of Tai Po District. It is located in Tolo Channel (赤門海峽), where is in the North-east of New Territories (新界).