Su Yanyu nodded seriously. "Shifu, don't worry. I, Su Yanyu, swear to the heavens that I will remember your teachings and won't let you down. If I break this oath, I will…"
Liu Sanniang interrupted Su Yanyu. "As long as you remember it, it's enough. You don't have to swear."
Su Yanyu was already prepared to take an oath, but being interrupted by Liu Sanniang, he didn't finish it. However, he understood that this was a serious matter.
After becoming Liu Sanniang's disciple, he could now stay by Liu Sanniang's side openly.
She, on the other hand, began to think seriously about how to teach Su Yanyu. He was interested in cultivation, but he couldn't do it.
Then, she could only teach him something else.
Liu Sanniang thought for a moment and decided to teach Su Yanyu how to refine poison.
Cultivators could refine poison, and so could mortals.
Su Yanyu was excited even though he had to learn from the beginning and take it step by step.