Why does the Xiaomi Robot Vacuum E5 dock twice on the charging dock during recharging?

During recharging, the main unit needs to ensure that the charging electrodes are in place with high precision. It will automatically adjust the recharging route based on signals from the charging dock. If the docking is not accurate, the main unit will back off and dock again. Before recharging, please ensure that the charging dock is placed on a flat surface and that there is no water residue on or near the charging dock to avoid slipping.