After graduation Chou was sent to Tainan, in the south of the island, to handle photography for the criminal division of the police department there. After work he would go out hunting for shots of the life of the people, as a balance to the monotonous routine of police photography.
由於具備了專業技能，周鑫泉在畢業之後分發至台南市警察局，就負責刑警隊的攝影工作。公餘之際，他開始出外獵影，捕捉民間的生活百態，以平衡單調、模式化的刑事紀錄攝影。