Complex sentence: Steven Lo is active in the Hong Kong football scene, as the chairman of the Football Management Committee of South China Athletic Association, he has overseen the winning of the Domestic Treble in the 2006--07 playing season.
Split into simpler sentences: Steven Lo is active in the Hong Kong football scene since 2006. As the convener of the South China Football Club, he has overseen the winning of the Domestic Treble in the 2006--07 playing season.