it should be John Berg. At that time, he was in a fund company, as if it were called. Harrington Gene Company. Then he was kicked out and started his own fund company. Because the management fee is relatively low, it is liked by customers. But if the income is low, there is no money to hire senior managers. It opens. Passive fund. As a result, the income is actually better than the active fund. Finally. Famous all over the world.