Bai Jingfeng is the most authoritative professor in the medical laboratory of the institute. He died suddenly because his heart could not bear the load due to staying up late for a long time to do research. After his death, he was included in the Space-Time System Administration for his merits during his lifetime, and he became a medical tycoon-type career behind the protagonist. This is the result of Bai Jingfeng's strong request. The days that followed were about traveling through various parallel worlds and becoming the leader behind one protagonist after another. One day, the main system found Bai Jingfeng. Oh no, it should be called system 8500 now. "8500, Take the mission. This is the last mission. After completion, you can decide to start your retirement life in this world or choose a parallel world." "Okay, it's finally over!"
After Bai Jingfeng entered the time travel mode,
