[1][2] During her tenure on the Fifth Legislative Yuan, Yang was critical of Twu Shiing-jer,[3] and underwent a disciplinary review in 2003 because she was absent for a vote to consider postponement of confirmation for new Justices of the Constitutional Court.
[4] Though Yang originally planned to go on a 2004 European junket led by Democratic Progressive Party colleagues, to advocate for Taiwan's participation in the World Health Organization, she later chose not make the trip.
[5] In 2011, Yang and her husband Kao Tsu-min led a petition to convince People First Party chairman James Soong to run in the 2012 Taiwanese presidential election.
[3][8] Yang was one of eight incumbent and former legislators indicted on charges of corruption in 2008, for allegedly accepting bribes from the Taiwan Dental Association in her endorsement of the 2003 Oral Healthcare Act.
[11] During the 2014 Taipei mayoral election, television host Tsai Yu-chen [zh] commented on allegations of forced organ harvesting against physician and independent candidate Ko Wen-je, additionally making statements about Yang and Kao.