Mrs. Ai'er still had some business to attend to over there. Since she had a live stream, she took a Hovercar back first.
Before she left, Mrs. Ai'er had given her this Crystal Stone.
It was transparent and looked no different from a piece of glass.
But when she clenched it in her palm and released a little spiritual power, she could feel it growing warm.
According to Mrs. Ai'er, the Mental Training Device she currently owned had a slot on top for a Crystal Stone. All she had to do was insert the Crystal Stone during her next training session to use it.
Mrs. Ai'er said that adding the Crystal Stone would make her training twice as effective.
There was no time to test it out today; she would have to try it tomorrow morning.
