Method:
First of all, judge the direction of a medium and long line through technical indicators.
Use technical indicators to make orders at support points or resistance points. Once the market fluctuates to a lower resistance or support point, make a reverse order.
In the profit lock, time is used to change space, and long and short are the main ones.
For example:
Lao Wang invests in spot silver and judges that the trend is empty at 3500 points, so he first enters the empty order at 3500 points, and then falls to the support point of 3450 points to lock in the profit. When the market rose to around 3490, he stayed long and short, and then fell below 3450 points to lock the position, trading time for space to achieve profit.