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There was a mountain-racing circuit atop Wangbei Mountain, a track winding around the mountain spanning a total of 11 kilometers, making it the longest in the country, hosting many professional races.
One particular feature that set the Wangbei Mountain track apart was that it was the only place in the country where it was legal to host a charity "car lottery" event. The organizer was appointed from above, but the drivers weren't restricted in any way.
Before the race, the organizers would issue a certain amount of car lottery tickets, which fans could choose to purchase. However, the proceeds from the lottery wouldn't go to the fans, the organizers, or the drivers, but would instead be donated to charitable organizations under the names of the people who bought the lottery tickets. This was a form of entertainment for charity, so it received a lot of support from above, and many sponsors keen on a good reputation participated in it every three years.
