1. Chang Ya-chung is a Taiwanese political scientist.

1. Chang Ya-chung is a Taiwanese political scientist.
Chang Ya-chung founded the Democratic Action Alliance in 2004 and was elected to the National Assembly in 2005, but resigned on the first day to protest the parliament's formation.
Chang Ya-chung was deemed an ineligible candidate for the party's 2020 leadership election, placing second in the following year.
Chang Ya-chung earned doctorates from National Chengchi University and the University of Hamburg.
Chang Ya-chung taught at Nanhua University until 2003 and is a professor at National Taiwan University.
In 2005, Chang Ya-chung was elected to the National Assembly representing the Democratic Action Alliance, but resigned on the first day of meetings to protest the National Assembly's formation, as it was convened solely to consider constitutional amendments proposed by the Legislative Yuan that led directly to the National Assembly's suspension.
Chang Ya-chung helped organize the Taipei Forum in 2012 to discuss Cross-Strait relations.
That same year, Chang Ya-chung was appointed to a government committee to develop new guidelines for high school history textbooks.
Chang Ya-chung worked as an adviser to three textbook publishing companies.
Chang Ya-chung has served as an aide to Hung Hsiu-chu and advised her 2016 presidential campaign.
Chang Ya-chung received credit for developing Hung's "one China, same interpretation" Cross-Strait policy.
The school was founded in March 2017, and Chang Ya-chung was named its president.
Chang Ya-chung said later that year that the Sun Yat-sen School would field its own candidates to participate in Kuomintang primaries for local office.
In January 2019, Chang Ya-chung announced that he would be contesting the Kuomintang's nomination for the 2020 presidential election.
Chang Ya-chung finished fifth of five candidates in the 2019 Kuomintang presidential primary won by Han Kuo-yu.
Chang Ya-chung ran in the 2021 Kuomintang chairmanship election, finishing second to Eric Chu.