A 3D puzzle that needs to be assembled manually. When you finish it, it will be a heart. Friends who are playing metal puzzles for the first time can follow the video tutorial provided by the merchant. However, it is a bit time-consuming. It takes about 8 hours to assemble. It is more difficult than building blocks. But it looks very romantic after assembling. It is suitable as a wedding gift for newlyweds, and also suitable as a gift for...