Because you already have the thinking of protecting yourself, know the word "band" and learn this technology.Don't always think about the big callback, think about the three-point premium.
Family (I also learn to bring disaster anchor),Everyone is a person who does great things in life (you can't invest without money), so don't care about two or three points.
—————————As long as the car is driving ahead, it is right to get on the bus at any time.Nasdaq ETF, the current funds are all net inflows, and there is no chance to make major changes in the near future.