How much does it cost to buy a 3d ticket for a black coffin?

Black is close to blue in hue, so it is recommended to buy blue balls. As the saying goes, "coffin" means "official wealth", while ordinary people pray for family and friends to have "official" and "wealth", and everyone likes to combine their wishes with the four numbers of 3, 6, 8 and 9. I suggest the landlord buy a blue 3d, 3, 6, 8, 9!