Nice puzzle game you got here! The controls are easy to grasp and the puzzle difficulty has good scaling throughout the level progression! However as Duendue pointed out, I somehow got completion on the last level without rotating to the right position. 

Overall this is a well thought out puzzle game and I enjoy it! Well done! 加油！

Very neat gameplay mechanic that relates perfectly to the theme! I noticed a bug where the game would progress even though I didn't place the squares correctly. Nevertheless it was a very enjoyable experience. Well done ! :-)

Simple but neat, both in concept and presentation.

The game could use a bit more sound effects though imo, like a sfx when moving, or a "ding" sound when the player successfully clear a level would make the game feel much more alive.

Good work :)

Would've loved to have more puzzles, but overal great concept! :D