Draw a box to mark out the Asian range, wait for price to breakout of the box and start reversing back into it, then trade the reversal direction. In todays example the reversal direction was upward, so the play book is to buy.
Keep it simple. Draw a box from midnight to 6 am and call it your Asian range. Wait for price to breakout of the box and form a reversal pattern then trade accordingly. In the attached 5 min chart, the reversal pattern in a grey circle is a bearish engulfing one
