Screw to find the nut Chinese version of the game is to use the mouse to click in the game to let the wood block disappear, let the screw find the nut, let the screw and the nut to screw together again
The beginning of the eighteenth level
Click the two small square blocks on the left of the right surrounding the screw, and the small square blocks disappear
Click on the top of the screw without a block on the leftmost block, the block disappears
Click on one of the two small square blocks on the right below the green square and the block disappears
Click on a small square block below the top screw block. The block disappears and the screw block tilts to get the nut off
The nut rolls down the ramp, hits the spring and it bounces off to the right
The nut bounced around the spring to find the screw
Screws screws and nuts re-screwed in a successful pass