Hsia was born in 1991 in Taiwan,[1][2] and grew up with an elder sister.[3][4] His father worked in construction and often took him to watch movies, where he developed a love for films.[5] He began watching Hong Kong movies since he was three, which he credits as a major influence on his performing style.[6][7] Hsia's parents divorced when he was seven, and he lived with his father afterward.[8] Hsia attended four primary schools in Wulai District, New Taipei City, and two junior high schools in Taipei, explaining that he frequently switched schools due to "boredom".[5][9] After graduating from junior high, Hsia moved to Chiayi to continue his studies.[5] However, during that time, southern Taiwan still enforced hair regulations, and Hsia, who had long hair, was deemed "a troublemaker" by the teaching staff, prompting him to return to Taipei shortly thereafter.[5] He took six years to graduate high school,[8][3] and was discovered by a talent scout during this period, which led to opportunities in film shoots, although he was quickly dismissed due to his "carefree attitude" and "lack of acting skills".[10] After graduation, Hsia worked in various jobs, including at a hotel,[7] a restaurant, a cinema, a host club, and a boutique.[10][11] While working at the boutique, he met several costume designers who invited him to shoot music videos and make onscreen cameo appearances, including in the music video of Li Ronghao's "Full House", which sparked his interest in acting and prompted him to pursue auditions.[10][11]
In 2019, Hsia took on a recurring role as Sie in the crime series The World Between Us,[17] and joined the main cast of the second season of the drama series The Mirror [zh].[18] He also starred in the drama films Deep Evil [zh] and Wild Sparrow [zh] that year.[19][20] In 2020, Hsia secured a main role as Chiang Chih-wei in the political thriller series Island Nation,[21] followed by a leading role in the family drama series Mother to Be [zh].[22] Hsia then had a recurring role as Chang Ming-hui in the psychological horror series Detention,[23] where his performance in the death scene received critical acclaim.[24][25] In 2021, he had a supporting role in the drama film Final Exam [zh].[26]
Hsia experienced another breakout performance in the Netflix crime thriller series Copycat Killer portraying Hu Jian-ho, an investigative journalist and the brother of Ko Chia-yen's character.[27][28] His character is disfigured and required special makeup throughout the entire shoot, and his performance was well received.[29][30] He also had a supporting role in the 2023 drama film Miss Shampoo and starred in the second segment of the drama series Haunted House for Sale [zh] the following year.[31][32] In 2024, Hsia landed a lead role in the romantic film The Time of Huan Nan.[33]