Complex sentence: It was the site of the Chinese National Team's clinching a spot for the 2002 FIFA World Cup Finals when they defeated Oman 1--0 to claim a spot for the finals in South Korea.
Split into simpler sentences: It was the site of the Chinese National Team's clinching a spot for the 2002 FIFA World Cup Finals. They defeated Oman 1--0 to claim a spot for the finals in South Korea.