Lotus Empress followed Han Sen to the underground shelter. She brought Empty Witch and a super creature comprised of vines with her, too; the latter being named Green Vine. They were also told to adhere to Han Sen's authority whenever needed.
Lotus Empress still required Han Sen's help, as she had dubiously explained during their initial conversation, and it prompted the formalities for a trade. It was something Han Sen agreed to. Before he opened ten gene locks, the Night Gem would allow even him to defeat No God Emperor easily.
Regardless, Han Sen asked her about his body. She told him that when a body was attuned to and focused on one gene lock, gene locks were easier to open. If a person could be proficient across a number of elements, the lack of an anchor made the process of opening gene locks much more difficult.