Went to Tang Dynasty

My name is Qin Feng. I was admitted to Peking University at the age of 17 because of my excellent grades. I am now a sophomore history student at Peking University. During the National Day holiday this year, I participated in a hiking activity through the Qinling Mountains held by the school's wilderness survival club during the summer vacation. I don't know why everyone got separated in a heavy fog. I have been alone in the mountains for four days. I still have four bags of compressed biscuits left, a lot of milk candies and fruit candies, and I have drunk all the water. There is no signal on my mobile phone or satellite phone. I have not had a signal for four days. When I met someone, I was still walking south. If the search and rescue team knew the way, they could find me. Qin Feng tore off a page of notebook paper, dug a piece of bark from a big tree, and clamped it. He had been doing this for four days when he had just lost his way. He walked south for five hours at a constant speed every day. He did not dare to walk too far for fear that the search and rescue team would not be able to keep up and that he would not have the physical strength to keep up with what kind of monsters he would encounter. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.