No matter how wildly it is spread on the Internet, false can never be true, and true can never become false. Several days have passed since the shocking Hangzhou "5.7" traffic accident occurred, yet the truth remains elusive. What was originally not a complex traffic accident - what really happened at that time? Was the speed of the vehicle involved in the hit-and-run truly 70 km/h as the police claimed? Why was the suspect allowed to go home and surf the Internet that night after having been placed under compulsory measures? The suspect had previously committed three speeding violations, one of which in December last year reached 210 km/h in an area with a speed limit of 120 km/h, far exceeding the 50% allowable limit. According to the law, his driver's license should have been revoked long ago. Who has been covering up for him? Is there really a "Grandpa Bi" behind the suspect?