A civil engineer woke up in the northeastern wilderness with mud on his body and no power in his system - he didn't realize that night that this was just the first stop.
When Lu Yuan was hit by the Universiade heavy truck in 1931, he had just celebrated his fortieth birthday. One sentence before the system runs out of power: I can go home 72 hours a month and use it twice. As for why he was wearing it, who he was working for, and what to do next—he didn't read the agreement at the time.
He first survived that night in the Northeast, and later met a few people who had nowhere to go, and the newly awakened thing in his palm slowly came into use. As a result, guess what, there are Honkai Impact, Stellaris, Warhammer, Mr. Zombie, and a bunch of places he can't name. The more you wear, the more people you bring back. The main world was slowly turned into a puzzle by him - Northeast China in 1931 was just one piece.
Which great power set up this time travel? The system hasn't woken up yet, the agreement hasn't been read yet, and the answer lies behind. Anyway, I'm a worker, so I'm done and I need to go to sleep first.