My family history in Singapore began with my paternal great-grandfather, Lee Bok Boon, a Hakka. The Hakkas are Han Chinese from the northern and central plains of China who migrated to Fujian, Guangdong and other provinces in the south some 700 to 1,000 years ago, and as latecomers were only able to squeeze themselves into the less fertile and more hilly areas unoccupied by the local inhabitants.