similarly, for the past 10 years, taiwanese have been immigrating to upscale neighborhoods in los angeles and orange county such as cerritos and irvine respectively. the city of cerritos is located in los angeles county but borders orange county and has a large diversity of asian immigrants. the city of irvine has a very large taiwanese population, though now more and more mainland chinese immigrants have flocked to the city. the irvine chinese school, which serves mostly the american-born children of taiwanese immigrants, is one of the largest chinese schools in the orange county area. these immigrants belong to branches from some of the most politically and economically powerful taiwanese families (with the surnames chiang, chen, cheng, kung, tsai, and wu).