¶ 3. Wait for automatic leveling to complete. After completion, remove the leveling switch and disconnect the leveling switch cable.
¶ 4.Click "MOVE Z0", make sure the leveling switch is removed, click "Confirm", take a piece of A4 paper and place it between the nozzle and the heating bed.
¶ 5. Click "Adjust Z", click Z- or Z+ to adjust the Z height, push and pull the A4 paper while adjusting, until there is a slight feeling of friction, click "Save" and go home, the leveling is complete
https://www.youtube.com/watch?v=YwS35rBtg1M