[1] After graduating from Gwangju Girls' Commercial High School, Yang went to Samsung Electronics at the age of 18 (or 19 in Korea) as an assistant to semiconductor memory researchers at the company.

She resigned from Samsung in December 2015 for her political career which began in 2016 when she officially became member of Democratic Party and later nominee for Gwangju constituency at the 2016 general election.

She was one of five elected members of Supreme Council of party for two years before resigning for the president of the NHI in August 2018.

[6] In 2020 general election, Yang defeated six-term parliamentarian Chun Jung-bae becoming the only woman representing a district in Honam region.

Yang then inflicted second punishment by gaslighting the victim, ignoring the complaints, and denying the situation in interviews.