This teacher Liu is a liar. I bought nearly 3000 yuan of stock solution, and I didn't lose a catty after using it. They also said that I have a physical problem and I need to buy three or four thousand yuan for filial piety. I haven't talked to anyone since I bought it. Hard-earned money was cheated, and the lesson was painful. Pass it on to each other. Liars won't cheat so many people. Let's resist the damn liars and don't let them get something for nothing.