After the sulfuric acid had been successfully collected.
In just a few short days, they successfully developed antibiotics.
The next and most important step was to give Ruri a skin test.
Holding a homemade fine needle and a diluted dose of the medicine, Li Xiang walked up to Ruri.
"Ruri, I'll give you a skin test first."
"It'll sting a little, but just bear with it for a moment. I'm not a professional nurse, but I have a steady hand with injections, so don't worry."
Ruri nodded obediently and quietly lowered her sleeve, exposing her slender, fair forearm. She held perfectly still for Li Xiang.
The needle slipped just beneath the surface of her skin at a shallow angle, slowly delivering a tiny amount of the solution.
The liquid seeped beneath her skin, and a small, translucent bump soon rose on her fair arm.
"All done." Li Xiang put away the needle and gently instructed her, "Wait quietly for thirty minutes. As long as there's no allergic reaction, we can start the treatment."
Everyone on both sides of the screen waited solemnly together.
Thirty minutes passed in a flash, and the test site showed no abnormal reaction.
"No problems. We can use the antibiotics normally."
At Li Xiang's words, everyone rejoiced.
Over the following days, Ruri took her medicine on schedule while continuing her previous herbal treatment.
The chronic pneumonia that had tormented her again and again improved at a visibly rapid pace.
Her coughing and wheezing diminished day by day, healthy color slowly returned to her face, and her body recovered little by little.
Several weeks later, she was completely cured.
The warm spring breeze blew gently, and wildflowers bloomed freely across the mountains, their layered expanses dazzling and bright.
Dressed in a blue dress, Ruri stood amid the