Inside the mysterious card, Chen Mu was conducting the incredibly boring training of his perceptual sensitivity. No matter the skill, and no matter how fantastic it looked, underneath that gorgeous exterior were dozens, hundreds, or even thousands of different monotonous, boring, and mechanical training regimes. Every one of those trainings required perseverance through upwards of thousands of repetitions, or even more.
While having talent provided a certain bonus to training and was just as powerful, it wasn't the most important factor in success.
After his perceptual acuity broke through 60, the content of the training would change.