A Little Proficiency in One Second, Destroying the Demons in Troubled Times

The world is in chaos with monsters and monsters doing evil. The people are in dire straits, and the sects of aristocratic families are willing to be the monsters' lackeys. Zhang Tianyuan traveled through time and became the food that was about to be given to the demons. He activated the system at a critical moment and gained a little more proficiency every second. Since heaven and earth are unkind. Then kill him and turn everything upside down! Kill him until he bleeds like a river! Fight for everlasting peace!