Ever since Gu Jin had seen Gu Yang's martial arts, she began watching from the sidelines whenever Gu Yang trained Feng Jue. Each time, she'd casually observe, pretending to look at the sky as if she were just idly watching.
Gu Yang found it amusing. If she wanted to learn, why act shy about it?
Understanding her sister's tsundere nature, Gu Yang took the initiative to ask, "Sister, do you want to practice with us?"
"Alright," Gu Jin responded smoothly, acting as if it was no big deal.
Feng Jue glared at Gu Jin, his eyes sharp like a wolf pup protecting its territory from a rival.
Gu Jin, however, quickly realized that her little sister was a treasure trove of knowledge. She knew far more than what could be found in textbooks, so Gu Jin often brought her books to Gu Yang for extra lessons.