Hsiao was a member of the third National Assembly elected from Chiayi,[1] where her family has enjoyed strong political support.[2][3] After the end of her term, Hsiao led the Chiayi City Farmers’ Cooperative Association.[3][4] In 2006, she contested a party primary for a legislative by-election, ending her candidacy to support Chiang Yi-hsiung [zh].[3] She sought the Kuomintang nomination for the mayoralty of Chiayi in 2014, though the party chose to back Chen Yi-chen [zh].[3][4] Subsequently, Hsiao planned to seek the mayoralty as an independent,[3][4] but later ended her campaign.[5] She was instead elected speaker of Chiayi City Council, a post once held by her uncle Hsiao Teng-piao [zh].[1] After winning the municipal election, Hsiao rejoined the Kuomintang.[6] She was named a deputy secretary-general of the party in April 2016.[7][8] Hsiao withdrew from the party for a second time in February 2018, announcing that she would again run for the Chiayi City mayorship.[6] She was formally expelled from the Kuomintang in September 2018.[9]