In 2010, Xu Dong started his professional footballer career with Liaoning Tiger in the China League Two division.[1] In February 2011, Xu transferred to another China League Two side with Harbin Yiteng.[2] In his first season with the club he would quickly establish himself as a vital member of the squad and went on to win the 2011 China League Two division title with them.[3] This was soon followed by promotion to the top tier at the end of the 2013 league season.[4] He would make his Chinese Super League debut for Harbin on 7 March 2014 in a game against Shandong Luneng Taishan in a 1–0 defeat.[5]