Complex sentence: He fled to Taiwan in 1949 and was appointed to the Recovery of the Mainland Research Commission in 1954, then to Los Angeles in the U.S. with his father in 1950, where he died in 2003.
Split into simpler sentences: He fled to Taiwan in 1949, then to Los Angeles in the U.S. with his father in 1950. He was appointed to the Recovery of the Mainland Research Commission in 1954 and he died in the U.S. in 2003.