[11][12] In 2013, she mobilized a few hundred people to occupy the Executive Yuan, after the Miaoli County Government announced that it would repurpose land belonging to four families in Zhunan Township.

[18] In June, Tsai was invited to participate in a tribunal called to review cases under the purview of the International Covenant on Economic, Social and Cultural Rights.

[24] Tsai was nominated Democratic Progressive Party candidate for the Nantou County magistracy during the 2022 local election cycle.

[28] Tsai narrowly defeated former magistrate Lin Ming-chen,[29][30] becoming the first DPP legislator to serve the Nantou II constituency.

[32] Due to public health concerns, Tsai supports limits on the amount of genetically modified food allowed to enter the Taiwanese market,[33] stating that imported soybeans specifically should be graded and labeled before distribution and use.