My great uncle was the first member of the family landed in U.S during 1970s. They were afraid the communist party of China might take over Taiwan within a short period of time. Political connection between Taiwan and China was delicate and basically not existed during that time frame. All Taiwanese young men were required to serve in the government arm force at the age of 18 (I believe the requirement still exist today). Most families moved to U.S. or Canada for the sake of their sons.
Communist victory in China separated entire family. Grandpa and my great uncle were the only two family members in Taiwan. It was important for my great uncle to have grandpa next to him. Grandpa and great uncle were both highly educated professionals. To have a job or open a business was never a hard task for them. Everything was prepared and settled before we came to America. From the blessing of my great uncle and grandpa, coming to U.S. was not as tough as we had learned from history books.