C322

"What kind of business?" fat old man asked curiously.

"Grandfather, do you know what the most profitable business is in this world?" Ling Tianqing thought for a moment before lightly knocking the table and asking.

"Casino, brothel..." Didn't you already do it? " fat old man had no concept of making money.

But Xiao Qing'er once said, "yellow, gambling, poison" is a windfall industry