Xia Nan is preparing for a long journey.
In a modern world with advanced technology before traveling through, as long as you know how to use some relevant tools and channels, it wasn't a difficult task.
To some extent, if you really didn't want the trouble, you could even decide on your destination on the day of departure without any prior planning. With sufficient funds, taking a phone and some cash, you could embark on a spontaneous domestic trip.
The highly developed tourism industry, fully covered land, sea, and air transportation, the information explosion of the internet era... in the vast population of the country he lived in his past life, the information accumulated over years online meant that even the most remote and unknown corners, if searched carefully online, might have logs and related notes left by an unknown traveler long ago.
