Wong served two terms on the Chiayi County Council prior to his election to the Legislative Yuan in 1989.[3] He won reelection in 1992 and again in 1995.[4][5] During the 1995 campaign, Wong became one of the first candidates to receive a patent for his likeness, which he used on many different trinkets.[6] Having won three consecutive elections as a Kuomintang representative of Chiayi County, Wong was placed on the party list for the 1998 elections, which he also won.[7] It was reported in January 2001 that Wong had let his Kuomintang membership lapse,[8] but later that year, he was named Kuomintang candidate for the magistracy of Chiayi County, losing the office to Chen Ming-wen in a three-way race.[9][10] Entrepreneur Su Hui-chen stated in September 2002 that Wong had helped her bribe legislators in 1998,[11] though Wong denied involvement.[12] He was indicted by the Taipei District Prosecutors' Office in February 2003 and charged with corruption.[13][14]
Wong returned to the legislature in 2005,[1] and was named a Kuomintang candidate for 2008. Shortly after defeating Democratic Progressive Party candidate Tsai Chi-fang,[15] Wong was elected Economics Committee convenor, alongside Chiu Ching-chun.[16] In March, Kuanshih, Shuishang leader Lai Chun-an was convicted of electoral fraud in support of Wong's campaign.[17] Wong ran in the 2009 Chiayi County magisterial election, and lost to Helen Chang.[18][19] In his 2012 legislative campaign, Wong made greater use of social media.[20] He defeated Tsai Yi-yu, the son of Tsai Chi-fang, in 2012.[21][22] He contested the Chiayi County magistracy for the third time in 2014, and again lost to Helen Chang.[23][24] Wong was ranked fourteenth on the Kuomintang preliminary party list for the 2020 legislative elections.[25][26] The list was subsequently revised,[27] and Wong's inclusion confirmed.[28][29]
