 What else do I want to restore it with? Do I use 3D printing? I still use metal to knock it out. Based on the cultural documents such as the painting of Yongle Palace, the painting of Dunhuang, and the painting of Tang Bohu, Zhang Zening released the restoration of Dunhuang Mo Gao Ku 61 Ku Zhang Yang Zi, the restoration of Dunhuang Mo Gao Ku Liang Guo Fu Ren Xiang, the restoration of Tang Bohu Yushu Gong Ji Tu, and the restoration of Ying He. Different works have different materials and materials.