太陽花學運
In late February 2014, about a week before the 67th anniversary of the February 28 Incident, Tsay led a group of fellow Taiwan Referendum Alliance members in removing a statue of Sun Yat-sen from Tang De-jhang Memorial Park in Tainan, a park named for a local lawyer executed during the military crackdown which followed the February 28 Incident. Kuomintang politicians including Fan Chiang Tai-chi condemned the TRA's actions. During the March and April 2014 Sunflower Student Movement, Tsay and the TRA also led sympathy protests outside of the Legislative Yuan. After the removal of protestors from the square in front of the Legislative Yuan, Tsay led further protests outside the Zhongzheng First Police Precinct station.