I found a trading strategy. I found an amateur trading strategy of FX. I don’t know very much about conventional terms of FX. But, let me explain. This linked chart is JPY:GBP, JPY:EUR. You see, in JPY base, GBP and EUR has strong correlation. So, my idea is, by comparing GBP and EUR, long position for relatively underestimated currency, and, short position for another. by this way, volatility will be eliminated (more or less). However, I will not do FX trading in my life.