[Recent signal review] $ZRO: A reminder was issued at 17:00 on 06-27. It was three days since the last reminder. Combined with the chart structure, it can be seen that a new wave of market rebounded from the support level; another reminder was issued at 18:00 on 06-29, confirming that it was a strong rebound from the support level. The profit and loss ratio and certainty of entering the market here are relatively high. It rose by 40%+ in two days.