Start Forging
"Wait a minute, Old Fa." Fa Zhen raised an eyebrow at Zhang Fei. "Can you sell me the materials to create the Heavenly Qi Convergence Array? Since the Heavenly Qi Convergence Array is superior to the Qi Gathering Array, I intend to use it in other locations, thus necessitating the materials."
Fa Zhen imparted the formation method and handed some materials to Zhang Fei. "I only have one set of materials left, so you should try creating the Qi Gathering Array first, or they will be destroyed if you fail to create it."
"Yeah, you're right; I'll do it as you suggest." After that, Fa Zhen took his returning jade out and immediately broke it. Zhang Fei hurried to catch up with Gang Zhishou, who had already finished building the forging furnace.