Prior to this, Liang served as Vice Minister and Deputy Minister of Economic Affairs (MOEA) in 2009–2014, and chairman of the Taiwan External Trade Development Council (TAITRA) from 2014 to 2016, and the Representative of Taipei Representative Office in Singapore from 2016-2023.

[1] Before holding the ministerial post in the MOEA, Liang has held several positions, such as Chief of Staff in the Vice Presidential Office, Head of economic division of the Taipei Economic and Cultural Representative Office in the United States and Deputy Director of Bureau of Foreign Trade of the MOEA.

Since joining the government in 1978, Liang has held several key domestic and overseas positions in which he applied his expertise in international economic law and trade negotiations to promote Taiwan's economic development and expand the overseas markets for Taiwan's export sectors.

In August that year, Liang was appointed the chairman of the Taiwan External Trade Development Council.

[4] Since then, Liang has led a team of over 1,200 trained specialists across its Taipei headquarters, 4 domestic branch offices and 60 overseas branch offices worldwide, organizing more than 300 overseas trade promotion events and 40 international trade shows each year.