After being homeschooled his entire life in his isolated farm, Alex finally makes his way to a big city where he finds out about a new VR game called Eternal Cultivation. By luck, Alex receives the Inheritance of the Alchemy God as his reward. Using that inheritance and masters that care for him, Alex begins to learn about the new world he has found himself in while pursuing both Alchemy and Cultivation to the pinnacle. Join my discord: https://discord.gg/ru3rgCKFvx
Alex tested Momo's ability to control her own poison. That was more important to her than her alchemy skills, as the poison was something she would be living with her entire life, having to control it at every moment.
Momo's physique was an interesting one when it came to poison. While it did create poison of its own, it wasn't something original to her physique. Instead, it copied the effects of the strongest poison she had recently consumed and refined.
She could, from Alex's understanding, consume poison that was beyond her own cultivation base as well, maybe even in the Immortal rank, and survive. However, doing so would cause her to lose control and grow unstable, and she wouldn't be able to keep the poison inside her at all times as she had been doing until now.
That was something Alex wanted to avoid, so he made sure she understood not to ever get into a situation like that.