Lex had spent many years studying, furthering his understanding of the universe, whether it related to the mundane world of mortals, or the extraordinary world of cultivators. What that meant for Lex, in his given circumstances, was that he knew well how to use various materials to craft anything, from basic to complex items as per his requirements.
Of course, there was the possibility that the harvested materials here in the Arch-Heaven had different properties. Thus, everything required some testing. Fortunately, while he was suppressed, his abilities weren't entirely restricted. Through the use of severely weakened arrays, and abilities of his own, he not only tested everything he gathered, but processed all of it so that it would be useful.
