[2][3][4][5] In November 2017, he, along with other Navy and Defense Ministry officials was questioned by Tseng Ming-chung, along with other legislators of the Legislative Yuan, regarding the Qingfu mine hunting case, a scandal involving US company Lockheed Martin and Italian firm Intermarine S.p.A. on the acquisition of six mine countermeasure vessels for the Republic of China Navy for an undisclosed amount.

[6] In the aftermath of the 2018 Hualien earthquake, Chen served as the overall commander of overall humanitarian operations and assistance missions.

[7] Chen was named as the Vice Chief (Executive) of the General Staff of the Republic of China Armed Forces from 28 April 2017 to 1 April 2019, replacing Admiral Pu Tze-chun, where he was instrumental in the army's reforms to counter the People's Liberation Army's offensive strategies in times of war, as he launched the improvement of scientific training methods in order to improve soldiers' overall physical fitness, strengths and capabilities.

On 1 April 2019, Chen served as the Commander of the Army, replacing General Wang Shin-lung.

[11] Chen's extended term expired on April 30, 2023 and was replaced by then-Navy Commander Mei Chia-shu.