Kwong Kwok Hung got a job as a vessel machinery apprentice in a factory in Ap Lei Chau when he was 14 or 15 years old. That was his first formal job. Ng Sui Mo was the first Nga Tsin Wai villager who worked in that factory. He had become a qualified worker when Kwong Kwok Hung started his apprenticeship. Ng Sui Mo first referred Ng Chi Wing to work in the factory, and Ng Chi Wing recommended Kwong Kwok Hung to the apprenticeship. At the time, four young Nga Tsin Wai villagers were employed by the factory as apprentices, Kwong Kwok Hung was the third of them who joined the factory. He learned from the qualified worker the skills to repair the machines of shrimp boats and fishing boats. During the period of apprenticeship when he had holidays, he would go home with several young Nga Tsin Wai villagers. They collectively resigned after one year or so. Later on, Ng Chi Wing and Kwong Kwok Hung were employed by the Pepsi Cola freezer manufacturer which operated factories in San Po Kong and To Kwa Wan. They were employed as semi-skilled blacksmiths and earned a monthly salary of $80. Shortly afterwards, Ng Chi Wing became a sailor through referral of Ng Sui Mo. Originally, Ng Chi Wing was supposed to be employed by the Jardine Shipping Services, but he joined another company, so he asked Kwong Kwok Hung to fill the post he was supposed to take.