There have always been buddies asking: Little Cola, I still don't know how to calculate whether a stock's price is cheap or not. Can you recommend a book about this? Actually, this is very simple. In the past, I might have seriously recommended various books, but later I thought, let's keep it light. Because even if I really recommend a book, many people probably won't read it anyway. So I'll just ramble a bit: For example, I think Moutai can sell a bottle for 1,000 yuan, sell 200 million bottles a year, and make a profit of around 100 billion yuan. And I think this business can last for at least another 20 years. Without looking at assets or anything, I think it's worth 2 trillion yuan. That's pretty much it...