After running a large preschool facility in Taiwan for more than 20 years, Amber moved to the US and opened Sunny Tree Daycare. Sunny Tree is a Chinese-English builingual daycare and preschool. The school has a monthly teaching curriculum that exposes children to different Chinese and English words and songs, math concepts, and seasonal events. The arts and crafts activities are designed around a monthly theme. The school serves home-cooked lunch and dinner using a wide range of ingredients. Sunny Tree does many activities together with Sunny House Daycare, including park visits and semi-annual parties. Their teachers are trained together with Sunny House Daycare and use the same teaching materials.

operated a large facility childcare center in Taiwai before opening Sunny Tree Daycare in Sunnyvale 7 years ago. She is also a trained nurse.