I know basketball, football, handball, tennis, swimming.

1. They talk because Zuang Zedong and Glen Cowan after Championship became friends and another people described that it is not bad to talk with each other.
2. Because Cowan missed his bus when playes with Zuang Zedong and Zedong invited him to their bus.
3. Because Zedong give Cowan a skarf and it will be ungratefulness not giving present and he give Zedong present.
4. There were lots of reporters-it was big news to see an American and a Chinese player together.