These materials were battle 'supplies' that Jia Yan had long reserved here. After all, for Jia Yan, at least for now, the entire vast subspace is his storage place for battle supplies. As long as he's careful not to let the chaos of subspace cause them to completely shatter, no matter how many supplies are placed here, others won't be able to take them away.
So he confidently placed things here, and the effect was excellent, like having a massive portable space, even so large that it was comparable to the entire universe.
His recovery speed was incredibly fast. If it were another creature here, seeing Jia Yan's speed in healing himself would undoubtedly be astounded and speechless.
