There are two types of breakthroughs for #套利交易策略 - upward and downward:

Upward breakthrough refers to the stock price breaking above the resistance line, initiating an upward trend.

Downward breakthrough refers to the stock price breaking below the support line, initiating a downward trend.

The resistance line and support line can be interchangeable:

Once the resistance line is broken, it will become the support line.

Once the support line is broken, it will become the resistance line.

To determine whether the breakthrough is valid, whether it is a true breakthrough or a false breakthrough, you can refer to:

1) Closing price: The closing price must stand above the resistance line (a spike above does not count) and remain stable for three days. If it cannot remain stable for three days, it indicates that the breakthrough is invalid.

2) Price: From the breakthrough position, it must increase by at least 3%.

3) Time: After standing above the resistance line, if the stock price returns below the resistance line, it should not exceed three days. If it exceeds three days, it indicates that the breakthrough is invalid and needs to be confirmed again.