Complex sentence: On 6 October 1996, the memorial service for "Chan Yuk-cheung, hero for defending the Diaoyu Islands" was held in Hong Kong; more than 2,000 people including officials from mainland China and Hong Kong had attended the service.
Split into simpler sentences: On 6 October 1996, the memorial service for "Chan Yuk-cheung, hero for defending the Diaoyu Islands" was held in Hong Kong. More than 2,000 people including officials from mainland China and Hong Kong attended the service.