Returned from Time Travel and Stomped Out a Magnitude 6 Earthquake

The sky is blue and the sea is vast. My brother came back in a hurry. When Yang Qingtong woke up, she found an eighty-nine-year-old boy in front of her, claiming to be her college student brother who had been missing for three years. "Brother, can you retrieve something from the air?" "What for?" "It's okay. I just want to see if the bank's vault is safe. As you know, my sister has put a lot of money in the bank. As Party A, it is reasonable to test the security defense, right?" … "Brother, can you help me cure my aunt? I don't want to have stomachache every month, and you don't want to see your sister suddenly having diarrhea while cooking for you, right?" … "Brother, take a look at the sea to see if there are any whales or anything like that. Our family just built a 100-acre fish tank, and they are missing an ornamental fish." … "Brother, I don't want to get married, but I also want to have children. Is there any way you can help me transform into a child, preferably one that can inherit my high-quality genes..." "No!" "Why?" Yang Cha said word by word: "You can't become so ugly!" [Daily life, modern immortality, a mixture of demons and monsters.