Complex sentence: In 1947 in Shanghai, Jiang married famous rocket scientist and engineer Qian Xuesen (aka Hsue-Shen Tsien), who co-founded the Jet Propulsion Laboratory at the California Institute of Technology and later led the space program of the People's Republic of China.
Split into simpler sentences: In 1947 in Shanghai, Jiang married Qian Xuesen (aka Hsue-Shen Tsien). He was a rocket scientist and engineer who co-founded the Jet Propulsion Laboratory at the California Institute of Technology and later led the space program of the People's Republic of China.