On 12/10/21, I started to open T/account Bostonmex 50 million on the exchange. Then a technical friend suggested that I add money to buy the code Pfizer 21/4/21 for dividends. I definitely have a dividend profit, so on October 27, I added 100 million capital, and on October 28, 21, I increased my capital by 100 million. After the capital increase, KT supported me to place an order to buy Pfizer stocks and bought a lot of other codes, which put my account at risk of being burned, and then told me to increase capital to save money. TK, I added 400 million to deposit money, but my account is still nothing.