1, related events:

In 2007, Hans Zhang was arrested for dragging a criminal policeman in a legal news program. In the past, Zhang Hans was called Zhang Han, but because of his criminal record, he was renamed Zhang Hans.

2, the incident.

In March 2007, Hans Zhang (Zhang Han) was still in college. One day, while driving under Jianguomen Bridge in Beijing, he was stopped by the traffic police on duty for questioning on suspicion of violating the rules. Hans Zhang ignored his obstruction and drove away by force, knocking down the law enforcement traffic police and dragging them on the ground for more than 100 meters, resulting in a broken arm of the law enforcement traffic police.