"But there are some things that resources alone can't change..."
Rod lay lazily in Molly's soft embrace, feeling her smooth, round legs, as if all the fatigue of the day had vanished.
"Like what?"
"The Underground City has crammed in over three hundred thousand people, but it was originally designed as a base for combatants, without considering ordinary people. The people at the lowest levels need to climb more than two hundred flights of stairs to reach the surface. Some women and children can't make it up in a whole day, and the congestion is causing us a lot of trouble."
It didn't take long for Rod's mind to turn and come up with a solution.
"Don't we have the Spiritual Energy Giant Crossbow? Once Spiritual Energy is input, it automatically tightens the crossbow string... We could modify it by extending the string and hanging a box below; once it's powered by Spiritual Energy, we could pull the box up to the surface."