With Low Skill In That Move

After having received two consummate sword techniques, Ning had been training hard, of course. He was now capable of utilizing the techniques of the [Raindrop Sutra] and the [Thunderflame Sword], and his power had increased. However, he had only learned a tiny bit, and he wasn’t even at the level of expertise, much less mastery. After all, even his father, Yichuan, was still pondering on the secrets of the [Raindrop Sutra].

Book 1, Chapter 16