When we follow the direction of the trend, we are often fooled by the price movement of the market. Usually it happens during the London session open. Appears on the chart that the price rise movement, but a few seconds later with a heavy price down to 100 pips. Similarly, when it appears to go down, then a few moments, reversed and increased to hundreds of pips. That's called "tricks market". Therefore, we must be careful at the time of the London session open.