"Without a bone-chilling cold, how can you enjoy the fragrance of plum blossoms?" The literal meaning is that you cannot appreciate the warmth of spring without experiencing the severe winter. When Qi Baishi was young, he asked an old seal carver for help. The old seal carver said: "Go and pick up a load of foundation stones and go home. Carve and grind. When the load of foundation stones turns into mud, then the stone will turn into mud." Your seal will be engraved.” So Qi Baishi picked up a load of foundation stones and went home, carving day and night, smoothing the carvings, polishing them and carving them again. Even when there were blood blisters on his hands, he didn't care. Day after day, year after year, a load of foundation stones were all "turned into slurry", and his seal cutting art also reached the level of perfection.