(modified) FCB is mainly made from fly ash from Jingdezhen Power Plant, low-quality porcelain clay tailings from Jingdezhen, and waste paper pulp. It is a new type of environmentally friendly board that truly replaces "wood" with "soil" and belongs to the product of resource recycling, turning waste into treasure. After multiple experiments and engineering practices, it has been confirmed that low-density gray silicon board can replace wooden boards accordingly. Due to its inorganic material properties, its physical characteristics of weather resistance, durability, fire resistance, and moisture resistance enable it to achieve application effects that many wooden boards cannot achieve in engineering applications.