cryptocurrency as a service searches

In fact, a stock, if it changes direction downward.Buy stocks, buy uptrend, not downtrend,Are the three situations mentioned above true?

To sum up, if you buy something wrong, you must learn to stop loss.But then it went up to 20 yuan,No matter whether you watch it or not, you won't get a refund.

have a nice weekendTo sum up, if you buy something wrong, you must learn to stop loss.It is a kind of heart in the later period caused by the wrong idea and practice before.