NZDUSD focuses on upward trend lineOn the 4-hour chart, NZDUSD is currently running above the upward trend line, and bulls have the upper hand. At present, we can pay attention to the retracement of the upward trend line. If the retracement position stabilizes, it will be expected to continue to rise, and the upward target will be the resistance near 0.640. If the price falls below the trend line support, it will start to go down, and the downward target will be the support near 0.620.