Chinese referee Ma Ning and his compatriot have returned home before the Fifa World Cup semi-finals after completing their duties at the tournament. Ma and Zhou Fei, the assistant referee, were left out of Fifa’s final list of referees announced on Sunday for the remainder of the World Cup. The duo followed video assistant referee Fu Ming’s early departure last week. The exit of the three referees brings an end to China’s involvement in the global showpiece football tournament. Ma posted a...