Training in Time Aura was difficult, let alone Time dao.
Unlike the Space stone which gave him a decent amount of Space aura within him to begin working with, Alex had nothing but just the ability to sense Time aura.
With just that, he had a long way to go before he could even begin to learn about Time aura.
The pendulum still helped and he still learned what he could, but even as years passed the progress was rather slow.
That was not to say that there wasn't any progress at all though. He could now begin to tell just from the aura alone when time was slowing down or speeding up. Just being able to differentiate those two aura was a huge step forward in his journey to learn Time Dao.
6 years had passed since Alex had come to the Blue Silk sect after leaving his store and had finally managed to break through to the next realm. He was now at Immortal Ascendant 4th realm.