67W fast charge can be replaced with 120W fast charge, but when the mobile phone is charging, the mobile phone power control chip will limit the input of the current, and will automatically adapt the charging current, that is, if you use a high-power charger, the mobile phone will also be limited to the rated current of its own mobile phone, so it will not affect the mobile phone. If we use a 67W charger to charge a mobile phone that supports 120W, it can indeed bring the charging effect, but the charger may be too small, leading to overload and other situations, and the fever is serious.