Complex sentence: In 2014, Mai Jiajian started his professional footballer career with Shanghai Shenxin in the Chinese Super League.He would eventually make his league debut for Shenxin on 30 August 2014 in a game against Tianjin Teda, coming on as a substitute for Wang Yun in the 85th minute.
Split into simpler sentences: In 2014, Mai Jiajian started his professional footballer career with Shanghai Shenxin in the Chinese Super League. He made his league debut for Shenxin on 30 August 2014 in a game against Tianjin Teda, coming on as a substitute for Wang Yun in the 85th minute.