I Became a System and Assigned Missions to the Time Travellers.

At the end of his life, Shi Ling closed his eyes, but when he woke up in the blink of an eye, Shi Ling found that he had become a big ball of light! "No! How did I become like this!" "System! Speak! You asked me to come here through time and give me something good!" "Ah???" It turns out that the underworld was assigned to make systems for time-travelers. "Ah! God!" "System! Work quickly!"