Complex sentence: Tagawa Matsu raised Koxinga in Japan by herself until he was seven, and her closeness with her son is evident in some of the accomplishment and decisions Konxinga made in his adult life.
Split into simpler sentences: Tagawa Matsu raised Koxinga in Japan by herself until he was seven. And her closeness with her son is evident in some of the accomplishment and decisions Konxinga made in his adult life.