Material preparation: essential oil.

Step 1: Apply essential balm to your fingers.

Step 2: Use your fingers to apply wind oil essence around the advertising paper posted on the door (wind oil essence can decompose the gum of advertising paper).

Step 3: let it stand for 10 minute (let essential balm and gum fully react).

Step 4: Gently remove the advertising paper posted on the door by hand.

Step 5: The advertising paper posted on the door has been removed and cleaned.