Upon making up his mind, Prince Fu began plotting how to eliminate Prince Yu. However, such a significant matter always takes time to plan.
But Liu Chengzhi was incredibly astute. In less than two months, by May, the Ministry of Works had not yet completed the transformation of the blast smelting furnace, yet large quantities of coal had already been transported to Huaiyuan County via the railway tracks.
Among them, there was a cartload of coal that lacked the usual glossy black color of ordinary coal. It was gray-black, with a rough surface, and much lighter in weight. The accompanying charcoal workers referred to this as coke.
