[1] While serving on the county council, Yang opposed mobilizing Penghu residents to support the building of a casino in the area.

[3][4] In December 2010, Yang attended a protest while President Ma Ying-jeou visited Penghu.

Yang stated of the central government, "We are taking to the streets because county commissioners, legislators and the president have turned a blind eye to our problems.

"[5] In 2012, Yang succeeded Lin Pin-kuan as legislative representative for the Penghu County district.

[6] Yang was reelected in 2016, and formed the Renewable Power Promotion Alliance alongside fellow legislators Chen Man-li, Su Chih-fen, and Chung Chia-pin in May 2017.