When I was eighteen years old, I felt a lot of inspiration when I first wrote the preface to this book, but when I actually wrote the main text, I had too many things to say in the face of the past eighteen years, and because of this, I didn't know where to start.

The feeling of youth seems familiar but strange, I feel as if youth is more of a constant fantasy, and eighteen years of life growth have gradually brought me into reality, and youth is gradually drifting away from me.

The kind of purity of youth, the more you grow up, the more you no longer exist, and those childish confessions that have been said to like in front of this time, there is still a little bit of temperature.

When I grew up, I saw that the past was simple and beautiful. When I was a child, I made a vow to be good friends for the rest of my life, and how much I have done it today, time is really cruel, and I debunked people's lies without leaving a trace of mercy.

A lifelong friend, now it sounds a little ridiculous, laughing at how innocent I was in the past, laughing at how terrible the world is, but in just a dozen years, let us grow so fast, recalling the time when we played in the mud in front of the door, and played together as if it was yesterday, today we have our own ideals, running into the distance.

I remember that we used to get together every year on the first day of the new year, and sometimes we didn't even know what to do, but we still wanted to sit down and talk about the past and see the future. Now it's also getting extra difficult, it seems that getting together has become very pretentious, and I haven't even seen each other and chatted for several years. When we grow up, we are all busy because of our studies, and we gradually have no common topic, we want to talk but we can't find a topic, and gradually even the communication becomes awkward, and what will the final outcome be, who will ask.

This relationship, alienated by time, gradually faded. Now I often miss this memory, growing up made me understand that feelings are like this, time is our worst enemy, we try our best to fight against time, want to keep the past, it is better to live in the present, towards the future. In the past, we only need good memories, not attachment to what we have in the past, and strive to cherish and protect everything in the present, and strive for what we want in the future.

Being a lifelong friend is not that difficult, but it is not impossible to have. I think we will be able to cross the wind and rain, trek through the mountains and waters, and meet one day in the future, and I hope that we will be better at that time. Let's go together to fulfill the promise we once made.

Buddhism says that the five thousand times of looking back in the previous life will be exchanged for a passing in this life, since we used to be friends, then I believe that our fate will also be staged in the future, I am not afraid of the long and short time, I am willing to be the enemy of time, waiting for our meeting.

Everything we have not lost in our youth, it is only because time has made it dusty, and I understand that after a heavy rain, everything will become clear.

The promise that I said when I was young, I may or may not be able to achieve it in the future, but it is a memory worth keeping, although there has been a young man, but once upon a time I was also persistent, whether it was good or bad, there was a cold eye and ridicule, or boasting and encouragement, but today it seems that it has been.

So let go of the burden of the past, pack up your gains and losses, firmly believe that there are always people or things that come for you, and believe that one day in the future, we will definitely collide with the future we want.