Daily homework review

$Direxion Daily Small Cap Bear 3X Shares ETF(TZA.US)$ Shorting makes up for the losses of going long on the top two
Summary of today's replay
1. Recently, it's still necessary to wait half an hour to one hour after opening to figure out the trend before entering the market
2. If the trend isn't right, you have to leave the market right away instead of going back and forth, hoping to bounce back and run away