If you want to obtain strong combat effectiveness in the secret files, you can only obtain some powerful equipment and other methods through your own operations. If you want to know how to celebrate the eighteenth birthday of Secret Files, and use secret files to improve your combat effectiveness and make yourself stronger, then follow the editor of Source Code Network to take a look at this guide. I believe can give you the answer.
Scene one
Click on the note on the kitchen wall, then pour the dog food onto the cake for the dog to eat.
Scene 2
After meeting your sister, click on the note in her hand and put the apple core on the table into the blue trash can on the table.
All the garbage on the floor and on the table are thrown into the pink trash can on the left.
Check to see who is knocking and choose not to open the door . Pull down the rope on the left and a ladder will come out.
Scene three
Click on the note at the fork, choose the right and go forward according to the rules and sister's prompts.
When you encounter the fork again, use the scissors on the ground to cut the bear to get a secret clue, and continue to choose the right side.
Finally, you can complete the level by successfully reaching your sister's room.