Complex sentence: DPP Legislator Chiu Yi-ying (邱議瑩) complained that: A large number of officials attended the Games, but all they have done so far is showing up at and taking part in the ceremonies when our athletes win.
Split into simpler sentences: DPP Legislator Chiu Yi-ying (邱議瑩) complained that 「 a large number of officials attended the Games. But all they have done so far is showing up at and taking part in the ceremonies when our athletes win.