Magic World Playing with Water Drops

Bai Ling, a top military expert, woke up and became a "good-for-nothing witch" who could be bullied by everyone in the Magic Continent. Zero magic power? It just so happened that she didn't believe this at all. In an abandoned workshop on the edge of the city, she restarted the climb of human technology with her hands: No scale? Then create it with your own hands - she used three tools: knife, water and lamp, balanced by hanging method, magnified by light to measure the error, weighed by water drop method, and reproduced the measurement standard with an accuracy of 0.1 Grams. No ruler? She used hair as a material, used electrostatic attraction, hung it by gravity, and then used light source projection to amplify it. After hundreds of trials and errors, she hand-rolled a precision ruler with an error of only 0.005 Mm, and began to build the first industrial machine tool. From the first flintlock to save the subjugated princess, to the roar of heavy machine guns to repel the demonic tide and shock the mainland. She established her own power and let the magical world begin to hear the voice of science. When the legendary mage and the dragon approached the city, they thought they had a chance to win, but Bai Ling's missiles had accurately targeted them from hundreds of miles away. Until the mushroom cloud of the nuclear bomb becomes the scepter of the new god, the old order completely collapses. However, the real crisis came quietly - the world-destroying demonic tide swallowed up the world, magic defense lines collapsed one after another, and the whole world fell into despair. When all the sentient beings knelt down to pray to the gods, Bai Ling just yawned and threw the "water droplets" in his hands into the sky... ——Now, who is God?