Traveling Around the World in Nine Hundred Days, Spending One Penny Counts Me Losing

"How to spend the least amount of money to complete a round-the-world trip in 900 days?" Based on this topic. The top ten entertainment platforms in the world jointly organized a large-scale reality show called Around the World in 900 Days. Whoever can complete a trip around the world within the specified time and spend the least money will win a grand prize of 100 billion. Facing the grand prize challenge of buying a ticket, taking a bus, staying in a hotel, and paying the organizer 10,000 yuan for free; and a human tricycle, one person can do it in a tent. Chen Luo, who activated the golden finger system, chose hiking without hesitation! Player a: "Lao Bang is hungry three times a day, how come he has so much food that he can't finish it?!" Player B: "It's unscientific... I was riding and he was hiking. How did he get in front of me???" Contestant C: "Dad from the program team, why does he have so many supplies but still consumes zero money? Are you sure he didn't cheat?!" Chen Luo shrugged: "Spending the least amount of money means not spending any money at all, right?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.