That evening, everyone stayed in Tianxiong City for a simple meal, then toured the newly built residential district, education center, and city defense system.
Early the next morning, Lin Shigong wanted to take everyone to visit the energy center, but Lin Mo politely declined.
"City Lord Lin, we'll come again when we get the chance. We've already taken up quite enough of your time."
"How is this taking up my time?" Lin Shigong still refused to give up.
"We've prepared lunch, too. Why not stay until after you've eaten?"
Hearing that, Lin Mo said nothing and headed straight for the teleportation hall.
He could already tell that if they stayed any longer, dinner would probably be prepared as well.
After having their identities verified, everyone passed through the intercity Portal and soon returned to Tianshu Underground City in the Arctic.
By now, all thirty-six underground cities of Great Xia had dedicated Portals leading to the capital, Celestial Pivot City.
In the event of a disaster, war, or major medical emergency, personnel and emergency supplies could transit through Tianshu and reach other underground cities in an extremely short time.
However, each use of a Portal consumed energy crystals, and the Portals had limited throughput. To avoid congestion, they were therefore not open to ordinary residents.
Under normal circumstances, people still relied primarily on rail transport for intercity travel.
Just as Lin Mo walked out of the teleportation area, Zhao Gang suddenly stopped.
"Commander Lin, let's go this way."
"Is there somewhere else you'd like to go, Big Brother Zhao?"
Looking at the thirty-six Portals in the hall, Zhao Gang smiled.
"I used to be in charge of the Ark Plan, but after I stepped down, I lost track of the details."
"Now it feels like having raised children and wanting to