Li Xiaoyao and Zhu Xiaoyue simply rented a room for their meeting, and the reason why Li Xiaoyao didn't bring Zhu Xiaoyue home was due to his own psychological reservations.
Li Xiaoyao had two residences at the moment, one was the newly bought Purple Sky Mansion where Zhang Meng and her daughter were living, and it was definitely not realistic to take her there.
The other was the apartment rented by Tang Tiantian.
If one were to put it plainly, Li Xiaoyao's relationship with Zhu Xiaoyue should be considered as him having an affair behind Tang Tiantian's back.
Morally speaking, this was wrong in itself.
Li Xiaoyao could ignore so-called moral ethics, but he couldn't bring himself to take Zhu Xiaoyue back to Tang Tiantian's apartment for a tryst.
That would have been too much.
Moreover, Li Xiaoyao was just plainly coming out with Zhu Xiaoyue to find a place to stay, nothing more.