I! Keeper of Time

Am I a loser? No! I am an ordinary citizen, one of the most ordinary people. Money is always the rarest thing in my life. I don't know if I can get rid of this ordinary life in this life. When I was young, I made a promise to reach the top, but I was just young and frivolous at that time. When I thought my life would be like this, an opportunity let me know that I can also be the protagonist... I am Jinsheng and I am in charge of this long river of time... What is the end of time and what is its source? Is it the birth or destruction of the earth? Is it the origin of human civilization? Or extinction?