This series of works was created during Mr. Wu's retreat. He worked for more than twelve hours a day, and each painting took three to six months. The works have a strong metal texture, rigorous shaping, and beautiful sculptures. The sculptures are like carvings and castings, showing a strong sense of weight, simplicity, solemnity, and compassion. Mr. Wu was praised as a "carving and casting" in the early days for this series of works. The founder of the "School of Painting".