In the 31st round of the Chinese Super League (CSL) match between Guoan and Yatai on December 15, a header by Guoan player Wang Ziming was ruled invalid.
In the third minute, Guoan took advantage of a corner kick and Wang Ziming pushed the ball into an empty net in front of the goal, but the referee signaled that Yu Yang had committed a foul first, so Wang Ziming's goal was nullified.
However, in the next 30th minute, Prince Ming made a comeback. After receiving a pass from the right side of the field from a teammate, he threw his head in front of the penalty area to make the score 1-0.
