Complex sentence: In 1998, he started his coaching career with several Chinese clubs, and he was an assistant of Dutchman Arie Haan in the China national team between 2002 and 2004.
Split into simpler sentences: In 1998, he started his coaching career with several Chinese clubs. He was also an assistant of Dutchman Arie Haan in the China national team between 2002 and 2004.