Former top engineer Brian Walker transmigrates into an interstellar child who can't attend school. By scavenging and turning trash into treasure, she finally manages to save up enough money just in time for the start of the school season and immediately goes to enroll.

　　She plans to become a mecha engineer in the future—rumor has it the job pays well and is closely related to her original profession. Plan: success √

　　Unexpectedly, in order to save on tuition, Brian Walker accidentally enrolled in the wrong major and became a mecha soldier—the kind of bloodthirsty maniac who lives on the edge every day.

　　Wei, quiet, poor, engineer: "......"

　　But the environment will not make her yield. Brian Walker decides to teach herself in her spare time.

　　During a major competition's training period, the media interviews and films single soldiers from each school, broadcasting live across the entire star network. Viewers can see everyone training desperately: gravity training, close combat, long-range entanglements, and so on.

　　【xx actually set the real pain sensation to 100%, that's gutsy!】

　　【YY's close combat is insane. Once that light blade comes out, who dares get close!】

　　【ww's whip skills are incredible, awesome!!!】

　　Then it cuts to Brian Walker, who is sitting cross-legged in the training hall, head down, completely absorbed in a book.

　　【What is Brian Walker reading?】

　　The camera zooms in, and the cover of the book in Brian Walker's hands is clearly visible to the entire star network: "Qingfei Teaches You to Become a Mecha Engineer in 21 Days"

　　Audience: ......

　　Just from the title, you can tell this isn't a book for serious people.

　　The next day, star network headlines: A certain military academy student breaks down during training, suffers a mental collapse, and attempts to change careers.

Chapter 1

　　Gray, dilapidated buildings exuded a damp, moldy smell. Rats and snakes scurried by from time to time. If you looked closely, you could see a child lying in the corner.

　　The surroundings were eerily quiet.

　　Brian Walker was covered with a tattered, filthy quilt. The ceiling was crumbling, exposing steel bars, always giving the impression it might collapse at any moment.

　　'Drip—'

　　A drop of dirty water, reeking of mud, landed on her face.

　　"......"

　　Brian Walker didn't even open her eyes. She rolled herself, quilt and all, deeper into the corner to avoid the dripping water above and continued sleeping.

　　At four in the morning, an alarm clock suddenly rang in the corner. Brian Walker reached out and pressed it.

　　'Crack—'

　　The alarm clock's leg broke.

　　She woke up instantly, scratched her messy, bird's nest hair, picked up the alarm clock and its broken leg, and checked them. Fortunately, it could be fixed.

　　Brian Walker bundled up the quilt and piled it in a slightly cleaner corner, then rummaged through a heap of scrap metal nearby to pull out a large bag and walked out of the abandoned building.

　　She was going to scavenge for trash.

　　A month ago, Brian Walker went from being a well-off senior engineer to a seven-year-old orphan who ate whatever garbage she could find. When she first woke up, a huge rat was squatting next to her face, ready to gnaw on her.

　　The child had died of a high fever. When she woke up again, she had become engineer Brian Walker.

　　She had the child's memories in her mind. The child had been picked up and raised by a mute old man who also lived near the junkyard. The old man had died not long ago, leaving her alone. The place she used to live in was taken over by others nearby. Helpless, the child could only find shelter in this nearly-collapsed abandoned building, scavenging for food in the junkyard every day. But hunger and a sudden high fever took the child's life.

　　Brian Walker, after all, was an adult. She spent one night accepting reality, and the next day went back to the junkyard to scavenge for food.

　　If she didn't eat, she would starve to death.

　　Over the past month, Brian Walker used the scrap metal she collected to make a tricycle. She put the big, tattered bag in the back and rattled her way over. The garbage truck dumped trash at 2 a.m. sharp, and she went at 4 a.m. to avoid the adults.

　　There were over a hundred people living near the junkyard, all surviving off trash. The adults would search through it first. Orphaned children could only go last; otherwise, if they found something good, at best it would be stolen, at worst they'd be beaten—sometimes to death. You also couldn't scavenge after sunrise, or the stench would be overwhelming and trouble would follow.

　　When she arrived at the junkyard, sure enough, there were hardly any people left. The new load of trash had already been picked over, and it was hard to find anything edible.

　　Brian Walker calmed herself, took a deep breath: "Ugh—"

　　Damn, forgot this was a junkyard.