Complex sentence: Feng Xiaoting started his professional football career with Sichuan Guancheng in the 2003 league season where he quickly established himself as a regular and despite being only 17 years old he would captain them for several games making him the youngest club captain in Chinese professional league history.
Split into simpler sentences: Feng Xiaoting started his professional football career with Sichuan Guancheng in the 2003 league season where he quickly established himself as a regular. Despite being only 17 years old, he would captain them for several games making him the youngest club captain in Chinese professional league history.