The other membership cards, on the other hand, were made of thin iron sheets plated with bronze, silver and gold. The decorations on the cards were also different, with the bronze card featuring auspicious clouds, the silver card featuring the qilin, and the gold card featuring the vermilion bird spreading its wings.  

Yu Xiaocao gave He Wanning and Yuan Xueyan each a membership card that gleamed bright and silvery. It was carved in the form of a relief, with a large, shining diamond in it.  

Yuan Xueyan had read a lot of books, but she had never seen a description of this material in any book before. The diamond card was hard and had low malleability. She repeatedly scrutinized the membership card with a look of seriousness on her face and muttered, "This material, if it is used to craft weapons…” 

Yu Xiaocao laughed heartlessly, ''Older Sister Yuan, you thought of the same thing as Royal Prince Yang. This alloy was obtained by chance during smelting and it’s not available in large quantities. There's not much that we can do with it except to make membership cards. However, Royal Prince Yang has already invited that blacksmith to the smelting workshop under the Ministry of Works, and he’s been working day and night with those artisans under the Ministry of Works in hopes that the smelting method can...