In the end, Du You decided to take Li Mengyao with him.
After waking up, Du You thought carefully about his relationship with Li Mengyao. Although he didn't know what Li Mengyao thought, and it was somewhat embarrassing for him to take the initiative in such matters.
But Du You thought about it, and if he let Li Mengyao leave him for another man, he would be somewhat unbearable. It seemed that he also had feelings for Li Mengyao.
If he only let Xi Qianxue go to those hidden worlds and not Li Mengyao, it would not only create a rift between the two women, but it could also create a rift between himself and Li Mengyao, which Du You was unwilling to let happen.
So, in the end, after thinking it over, Du You decided to take both of them; a few days later, when Li Mengyao had finished handling her affairs, Du You took them both and first made a trip to the Tangled Undead World.