What is the significance of engraving Cheng Zhai on the back of inkstone?

Carving Fu Cheng Zhai on the back of the inkstone is a symbol of good luck. People often regard the ancestral Guangdong ink stone as the most precious and proud property. As the saying goes, there used to be a family with ink fragrance, a long book, a letter on the case (ink letter), a full warehouse, a valley in the inkstone field, and a blessing in farming. In their view, if one of the ancestors inherited Duanyan, it would be the best symbol of a noble family, a prosperous family and a long scroll. Ink stone, pen, ink and paper are the traditional Four Treasures of the Study in China, and they are the necessary tools for China's calligraphy. The inkstone is not only the stationery of the study, but also a rare collection of literati in past dynasties because of its solid nature and immortality. The materials of inkstone platform are rich and varied, besides red stone, end stone, rolling stone, peach and stone, mud stone, Xugong inkstone, Yishui inkstone, turquoise, strange stone and chrysanthemum stone, there are dozens of kinds of jade inkstone, jade miscellaneous stone inkstone, tile inkstone, lacquer sand inkstone, iron inkstone and porcelain inkstone.