Jennifer joined CCM's short-term mission team to Macau in 1991 and was deeply moved by the great needs of the field and the lack of workers. Subsequently, she joined CCM in 1993 as a missionary to Macau. She served in the Tutoring Centre of the C&MA's Tai Sun Church in charge of the youth ministry. Student services were provided to reach the students and parents. From 2010 she became the Center-in-charge of the Simpson Education Centre which was a new ministry of the Hong Kong Alliance Mission to help high school dropouts back to school. Jennifer was diagnosed with cancer in July 2011. After surgery and treatment, she recovered and returned to Macau to serve. In 2017, she started to get involved in the church planting ministry of Shek Pai Wan, serving the elderly and children, and reaching out to different groups through social activities.