QH Renter said:
I was curious what your data showed because there were relatively few Asians when I started elementary school in Irvine. There were a few Japanese and Vietnamese, but no Chinese or Koreans at that time. That changed pretty dramatically by the time I went to middle school (which would be consistent with the time frame you mentioned).
Japanese and Korean can survive without their ethnic foods and market. Chinese can't. Early settlers to San Gabriel, Monterey park, Hacienda heights, Rowland Heights, Cerritos and Irvine were Japanese and Koreans. Soon came the Japanese and korean restaurants to service the population. Then the Taiwanese purchase the Japanese restaurants and tried to pretend sushi chef themselves but added a kitchen god in the kitchen and several thick Chinese yellow pages stacked by the register. Soon after that their relatives start a small Asian grocery or a small dumpling restaurant but neither lasted several years.
The original Asian population in any cities in modern time will never be Chinese. Most Chinese are not risk takers in places where they live and places to establish a business. They relied on predecessors like the Koreans and the Japanese.