C239 Mustard Seed Bag

The Mustard Seed Bag was a commonly used tool by high-class cultivators 30,000 years ago. Its function was to have its own universe, to take in all living things. A small Mustard Seed Bag could at least hold a few things.

Moreover, the size and weight of the items would not change after being filled. It was an extremely convenient item. Any cultivator of any rank would want one.

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