Farming in Different Worlds [Quick Travel]

Alien species invaded, the city was destroyed, and survival supplies were severely lacking. As an orphan, Song Yushi was helpless, running around alone, and eventually died. After coming back to life, Song Yushi's first thought was: to farm and collect grain! In addition, science and technology must be developed to train ordinary people's ability to deal with disasters and ferocious beasts. Being so busy, how can I have time for house fights/ palace fights! Tentatively: [The first world (√): Dressed as Mrs. Yazhai] (There is no emotional scene, the main text of the village owner does not appear, the heroine returns to the village after leaving) [The second world (√): There are one poor and two white sects in the world of cultivation] At the beginning, there is a mountain, four broken houses, and a useless little junior brother. As the leader, Song Yushi fell into silence. [The third world (in progress): interstellar + mermaid + live streaming + farming] [The fourth world: Return to the original world] Intention: Knowledge is more important than wealth and power, and living a down-to-earth life will definitely lead to good results.