Reborn in Junior High School? Also Add a System?

The protagonist, Long Jin, was unexpectedly reborn in junior high school. There is also a seemingly useless system at the beginning. How should Long Jin go on? I hope I can still remember the lottery numbers at this time. There will be a series of upgrades to the system. What will it look like in the end? What will be the result? Please add it to the bookshelf. This author may update slowly, please understand, thank you! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.