"This box is very similar to your storage stone, but it's somewhat different. Storage stones are created by nature, some with help from cultivators, while the Cosmic Box is entirely created by cultivators. You might fall in love with this box because it can contain the entire universe. You no longer need to carry multiple storage stones with you."
"Open the box and insert some internal energy into it. Whether it's your Qi, spiritual energy, or martial power, it doesn't matter. Afterward, you will become the master of the box until you die."
