An unprecedented oath-taking controversy broke out at the inauguration of the council. The Leung Chun-ying authorities asked the court to disqualify Baggio Leung and Yau Wai-ching after they inserted their own words into the oaths of office and mispronounced "China". The NPCSC controversially interpreted Article 104 of Hong Kong Basic Law, effectively adding retrospective regulations of the format of oath-taking of public offices in Hong Kong. After two Younspiration members were disqualified by the court, Leung's authorities pressed charges against Leung Kwok-hung, Nathan Law, Lau Siu-lai and Yiu Chung-yim, and the four pro-democracy members were disqualified as a result. This brought a historical low of pan-democrats' seats of the council, losing control of the geographical constituencies.