Game Overview
This is a classic 4x4 jigsaw puzzle game with 16 scattered pieces split from a complete beauty-themed image. Players drag and swap pieces to restore the full picture, and must finish the puzzle before the countdown ends to clear the level. Any piece placed in the correct position will automatically lock into place and cannot be moved again, making the puzzle process both stress-relieving and engaging.

---
Basic Game Rules
Piece Swap Mechanics
- At the start of each round, the 16 puzzle pieces are randomly shuffled and fill the entire 4x4 grid layout, with each piece being an equal cut of the original complete image.
- Press and hold any puzzle piece, drag it to the position of another target piece, then release your finger to swap the two pieces.
- There are no limits on swap direction or distance; you can adjust pieces repeatedly until they are in the right position.
Auto-Lock Mechanism
Once a puzzle piece is moved to its exact correct position matching the original image, the system will automatically trigger the lock effect. The piece will be fixed in the grid and disabled from further dragging or swapping, with a clear visual indicator to separate completed areas from unadjusted pieces.

---
Level Clear Rules
Core Clear Condition: Restore all 16 puzzle pieces to their correct positions to form a complete, seamless beauty image before the countdown timer at the top of the screen expires.
- If the puzzle is not fully completed when the countdown ends, the round is deemed failed, and you can choose to restart the current level.
- When restarting a failed round, all previously locked pieces will be reset, and the 16 pieces will be randomly shuffled again for a new attempt.

---
Pro Tips for Faster Clearing
- Prioritize edge and corner pieces first: The corner and outer edge pieces of the 4x4 grid have distinctive features, and locking these pieces first helps build the puzzle framework quickly.
- Focus on detailed clues: Use unique details such as facial features, hairstyle, and clothing patterns from the beauty image to match adjacent piece connections accurately.
- Use the auto-lock feedback wisely: Once a piece is locked, no further adjustments are needed, so focus only on the remaining misplaced pieces to reduce mistakes and save time.