Her sister smiled warmly at him and placed a gentle hand on his shoulder. "It's nice to finally meet you, Zero. I hope that Yin Yue has been treating you well." There was an unspoken understanding between them; the weight of responsibility for their disciple's training rested heavily upon their shoulders.

They spent the rest of the day catching up with each other, sharing stories and experiences from their respective journeys through cultivation.

Her sister raised an eyebrow at his question, amused by his curiosity. "Yes, this is tobacco," she replied with a laugh. "I do enjoy smoking it from time to time. It helps me unwind after long days of cultivating." She glanced over at Yin Yue, who simply shrugged in response.

Her sister offered the cigarette to Zero, who hesitated for a moment before taking it with trembling hands. He had never seen such a thing before and was curious about its effects.

"Oh dear," Yin Yue said, her voice filled with concern. "I didn't realize the situation was so difficult for you." She placed a comforting hand on his back and began to gently rub circles, hoping it would help ease some of his tension.

"Perhaps...perhaps I can assist you?" she suggested tentatively. "There are many techniques in my arsenal that could help improve one's endurance and focus. If you were willing, I could teach them to you."

Yin Yue smiled softly at him and gave his shoulder a reassuring squeeze. "I understand your concerns," she said, her voice gentle. "It's natural to feel protective over something you've worked so hard to build." She paused for a moment, considering her next words carefully. "Perhaps we should go over the list of new arrivals together? That way, I can help identify any potential trouble-makers and we can come up with strategies to deal with them before they cause too much issue?"