What is a positive EV? In theory, during the dividend period when the Hong Kong stock market is clearly doing well, opening a securities firm is considered a bonus because at least some securities firms are willing to offer account opening gifts, which can be taken advantage of. Just like Binance Alpha, when you open an account during the bonus period, you also enjoy the bonus. Even though your score is getting higher and higher, you are still making a small profit. But everything has a dividend period or, in layman's terms, an upward period, as well as a downward period. Doing the right thing during the dividend period is a positive EV.