"In the Immortal Gate, men and women are free to love, there's nothing daring about admitting that. It's rare for him to come here, so you must seize the opportunity to show him your worth, and take a few more days off to spend time with him. Such a good man, now every female cultivator with a bit of connection in the Immortal Gate is seeking his contact. Just among those in the Waiting-Chamber of the Divinity Transformation families I know of, there are several."
Zhongli Yi was Zhongli Tianyu's older female cousin, but although she had also succeeded in Foundation Establishment, because the remaining Liquid Gold Jade and the Infant-Transforming Elixir of her family were used as a foundation, even Zhongli Tianyu was not allowed to consume them.
So if she wanted to achieve Core Formation, she would need to serve the people in the Immortal Gate.