Doomsday: the Heroine Hoards Goods, I Stock up on the Heroine's Goods

(Science fiction apocalypse + rebirth + space + system) In the previous life, humans became extinct and the world collapsed. She watched Zhu Ma die in front of her, but she couldn't even collect his body. After being reborn and returning to the time before the doomsday came, Jiang Xueqing had only one thought—— This time, she must save Gu Junchuan. But as soon as she snatched the bamboo horse back from the zombie's mouth, she found that she had an additional sign-in system in her hand. On the first day of signing in, she snatched the space supplies from the heroine White Lotus. When she checked in the next day, she blocked the fate of the pseudo-heroine. On the third day of signing in, she conveniently accepted an ice-type psychic as a teammate. Later, teammates picked up more and more, and enemies fought less and less. When Jiang Xueqing came to her senses, a group of big guys were already standing around her. And she didn't know when— Became the savior of all mankind. --- One sentence summary: After rebirth, I just wanted to save Zhuma, but in the end, I saved the whole world.