The easiest way to open the door.

Step 1. Use paper clips: Take a paper clip or safety pin and straighten it. Then make a slightly upward curved shape at its end. You can buy a set of professional unlocking tools at the hardware store.

Step 2: Insert the wrench: Insert the wrench into the lower part of the lock hole-that is, the side facing the key tooth.

Step 3: Turn the keyhole: Hold the most suitable part of the wrench and turn the lock in the right direction with slight force.

Step 4: Insert the paper clip: while exerting force on the lock core, insert the end of the paper clip into the upper part of the lock core.

Step 5, feel with a pin: rotate in the keyhole with a paper clip until you feel the marbles inside. If you open an ordinary door lock, these marbles are likely to be at least five in a row.

Note: Many experts suggest that the lock core should be "polished" before unlocking. Straighten the second paper clip, bend it several times, and then push the paper clip into the lock without using a wrench. Then pull it out quickly and hold the upper part of the lock cylinder when turning the wrench. You may only be able to break through one or two marbles in this way.

Step 6: Push up: Now we will really "unlock" (link). Pick up the stitches in the lock one by one with a paper clip. Try to feel the moment when the latch reaches the "unlocked" position. You should feel a slight looseness and even hear a slight click. Note: Open the farthest stitch first, and then move to the next stitch.

Step 7: In the process of increasing the strength, you should constantly increase the strength on the wrench slightly until you have connected all the stitches.

Step 8: Turn the wrench. Now turn the wrench with all your strength. Look! The lock will open.