For cultivators like Charlie, a hundred years really wasn't much—just as it was for Vera.
She was a wanderer for 400 years, as she was forced to run for her life across the world, but she was 500 years now—time to change how she lived.
In fact, it felt like someone up there agreed that she had suffered too much over those 400 years, and decided to make things even for her remaining 100 years by setting her up with Charlie.
She had been studious since before the Qing dynasty, and then exposed