Gongyang Songfei was one of their best friends. He's not yet thirty. Therefore, the young man, who was very active in his daily life, called Shanquan an uncle.

"Songfei, what's wrong?" Shanquan was overjoyed that Songfei had finally contacted him. Usually, Songfei always contacted Shanquan or his friends at least once a week. But in the past two months, there had been no news from Songfei at all.

"Uncle, please listen carefully."

"Just tell me what happened?"

"I am in danger. My life is being threatened. I can't say too much. Uncle, have you received my package?" The words flew out at a quick tempo.

What is this kid talking about?

"What package? I haven't received it. Where are you right now?"

"Right now, I'm hiding in a place outside the city. I can't go anywhere. I asked Uncle to take one of my things from the Dafeisi Building and keep it for a while. I attached all instructions to the package I sent. Please, Uncle! "

"Okay, I'll wait for the package to arrive."

"Thank you, Uncle."

Shanquan still wanted to ask further, but Songfei disconnected the phone.

"What happened to this kid? What kind of trouble is he facing this time?" Shanquan muttered to himself.

As if forgetting about his own business, Shanquan sat pensively on the long couch in the living room. His brain was working hard, trying to digest what he had just heard. While waiting for the package that Songfei had mentioned, Shanquan remembered his original intention of having lunch. There were still some leftovers from breakfast. This morning Shinnshiow had cooked so much that they only ate less than half.

Shanquan ate heartily. In less than ten minutes, he had finished lunch. After being full, his brain was working much better. He could think more clearly.

Songfei asked me if I had received the package, meaning it should have arrived. Perhaps it had come, but no one was home.

Because of their busy schedule, the house is usually empty during the day. Previously, several times the package came, but the mailman had to take it away because no one received it. They had to wait until the postal delivery worker redelivered the package the next day. However, once, the next-door neighbor kindly represented them to receive the package. He was standing in front of the house when the mail carrier arrived.

Having remembered that, Shanquan got up from the couch and rushed out to the house next door. Shanquan's guess was correct. It turned out that yesterday at 2 PM, the postal carrier delivered the package, so the neighbor indeed received the thing. Since something like that had happened before, the letter carrier did not hesitate to hand over the package to the neighbor.

This morning the neighbor had come to their house to inform them about the package. But, because Shanquan and his friends were going to the station, he didn't have a chance to hand over the package.

Shanquan opened the package right away. It was a wooden box containing several keys. He realized those keys were the keys in the Dafeisi Tower. Those were the fence keys, the front door keys, the unit Songfei rented keys, and its room keys in that building.

Songfei had indeed rented some units in that building. Even though Shanquan was amazed where the young man got enough money, he never directly asked Songfei about it. That building was intended for offices. However, for some reason that Shanquan himself did not understand clearly, the building was currently empty. The tenants were no longer there. But some tenants still have belongings there because the rent had not expired yet. Songfei was one of them.

He was a young man who loved detective and mystery stories. He was so excited that he often played games related to those genres. Songfei had played such games several times, both in Dafeisi Tower and elsewhere. Shanquan and his friends were also familiar with the building. They had been there several times, both day and night. So it was not strange that Shanquan knew the custodian and night guards who worked in the building.

In a note attached to the package, Songfei asked Shanquan to retrieve and store an item in a room on the tenth floor. Songfei also included a photo of the bag in question so that Shanquan would not take the wrong thing. When Shanquan glanced at his watch, the time was already 2:50 PM. The Dafeisi Tower was very far from his house. The location was on the edge of the city, bordering the next city. If he left now, at least 5:30 PM, he would get there. Shanquan had to hurry to go so as not to come home too late at night after he finished what Songfei asked him to do. He has to consider his current health condition. He should not go out too much at night.

After changing into his clothes, Shanquan left for the nearest subway station. Indeed, from that station, a subway line stopped at the subway station near the Dafeisi Tower, which was Line 15, but it took forever to get there. So, Shanquan decided to take Line 21. Even though he had to change lanes twice and then got off the train at a station about two kilometers from the Dafeisi Tower, the trip would only take a much shorter time.

That afternoon, the weather was scorching hot. Shanquan had seen the weather forecast on television right before leaving for the subway station this morning. They had said it was sunny today. Most likely, it would not rain. So Shanquan decided not to carry an umbrella. He did not want to carry things because he had to bring home a large enough bag later. Besides, the last time Shanquan had gone to Dahfeysi Tower, he accidentally left his umbrella there. So when things were done, when he had to go back home, he would take the umbrella and bring it home.

Having to change lines twice, Shanquan made sure not to fall asleep so that he didn't miss the station where he had to get off for transit. At that time, the passengers on the train were not too crowded. But if Shanquan had left a little late, the situation would have been much different.