The front of silver bamboo slip carved twelve representative warfare theories selected from “Military Science of Sun Tzu”, such as “Know the enemy and know yourself, and you can fight a hundred battles with no danger of defeat.” The reverse side was Sun Tzu’s portrait and ancient battle scenes to enhance the theme. This set of collection adopts coinage technology, for example, sand blast and mirror surface process, each set of collection is composed of twenty individual slips which cast through 40 sets of moulds. After artificial mirror grind, polishing and anti-oxidation treatment, each slip would be weaved together, and the whole production period was more than six times than it of producing ordinary precious metals collection. So it is more valuable on the craft.