Period: The Little Girl Who Scavenges and Empties a Starship from the Start

[Period Setting + Family Bonds + Adorable Child + Scavenging + Scientific Comeback + Wish Fulfillment + No Saintly Hero]

1969, deep in the Gobi Desert.

As foreign experts withdrew, they left behind a cruel prediction: without our technology, the people of Longguo won't be able to build a real engine even in another hundred years.

The prototype engine exploded during testing, bringing development to a dead end.

Chief engineer Jiang Wanli stared at the wreckage scattered across the ground, sorrow filling his eyes.

“Grandpa, let me make it go boom.”

Four-year-old Jiang Xiaoyu came stumbling over, dragging a strange silvery-white part behind her.

No one knew that beneath the abandoned dry well behind the base lay a mysterious ruin filled with countless unknown materials.

The scrap metal Xiaoyu casually hauled back proved, after testing, to be far more heat-resistant than any alloy known to them. The marbles she played with had such precise internal structures that every expert at the institute was left speechless.

When Longguo's engine roared to life with technology generations ahead of its time, those who had tried to monopolize the technology fell silent, trembling.

Clutching the astounding test report, Jiang Wanli spoke in a hoarse voice, overcome with joy. “Xiaoyu, are there more treasures like this?”

Jiang Xiaoyu pointed at the well and answered in her little-girl voice, “There's lots and lots more down there. Xiaoyu can't carry them all.”