"As long as it's within the normal stopping time, the doors remain open," the Portable Residence offered a solution.
Li Banfeng was overjoyed.
After obtaining the rails, the Portable Residence could take Li Banfeng to his designated destinations based on his thoughts.
But there was a serious drawback. The key was outside the Portable Residence and couldn't be taken along. If Li Banfeng left and the Portable Residence locked its doors, he wouldn't be able to return home.
However, if the door wasn't closed, this problem would be solved.
Li Banfeng asked the Portable Residence, "How long is the normal stopping time?"
"It depends on whether it's a large station or a small one."
"How do you distinguish between large and small stations?"
"It's determined by the scale of the platform."
Li Banfeng stood up and said, "I'll build a large station, one that can stop for a whole day at a time."
