In 1902, he became the headmaster of the Military Academy of Korean Empire and then the head of the army court.

In July 1904, Gwon was sent to Liaoyang, and Lüshunkou District to console Japanese forces[2] with Major Cho Seung-guen, and Captain No Baek-rin.

[2] On September 26, 1905, he was appointed as the Minister of Agriculture, Commerce and Industry as a member of Han Kyu-seol's cabinet.

[5] The five bureaucrats, including Gwon Jung-hyeon were shunned as later generations retrospectively title them the Five Eulsa Traitors.

When the Japan–Korea Treaty of 1910 was signed, Kwon Jung Hyun was conferred the rank of First Class Viscount on October 16 and was listed among the Korean nobility.

[7] Gwon's legacy remains heavily controversial among the Korean populace as he was known as a collaborator with the Japanese forces.

[9] In a survey conducted on the lineage of nobility in 1960, his grandson was working at an Antique Art Association.