Cosmic Editor - Chapter 43 Tier 1-ish

Floods, torrential rains, extreme cold, heatwaves, hail, earthquakes, polar nights and polar days… Overnight, the world transformed immensely as numerous natural disasters swept across it.Gu Yan knew, who struggled alone in the post-apocalyptic world for ten years, finally met her end alongside her enemies.Upon opening her eyes again, Gu Yan knew with her space ability replanted herself back three months before the apocalypse.Her younger brother had not yet been washed away by a sudden flood, and her boyfriend had not been frozen to death by his cousin in extreme coldness.With her soon-to-be useless company, she tricked her cousin's family out of billions, and Gu Yan knew started her delightful stockpiling life.From pearl milk tea and instant noodles, hot pots and rice with big plate chicken,To things that fly and swim,Whether for eating, drinking, playing, or using,All that can be thought of and not, she arranged everything.Whether it could be of use or not, stockpiling was the key!

After an unexpected death, a soul finds itself reincarnated into the body of Itsuka Shido, an ordinary teenager in a world filled with powerful spirits, magic, and dangers from other dimensions. With the help of a mysterious system integrated into his body, Shido gains the ability to travel across worlds, summon legendary anime characters, and unlock a wide array of random skills and abilities.Disclaimer: The cover isn't mine, credits to the original artist.

In the twenty-ninth year of the First Emperor, Bo Langsha was attacked.

When Ying Zheng merged the memories of the 21st century history doctor, looked at the mighty mountains and rivers in front of him, and said to himself, “In this life, my Daqin can’t die!”

- Description from novelbuddy

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.