Country A underground secret base, research institute.
"Doctor, you've finally returned? Three years, and you've finally appeared again."
The speaker was a middle-aged man in his fifties who, upon seeing the Unrivaled Doctor emerge, was so excited that tears streamed down his face.
"Uncle Wu, long time no see."
The youth, handsome and androgynous, softened his usually cold gaze, "he" patted Uncle Wu's shoulder and spoke.
After that, "he" entered the laboratory with another man who had come along.
The air was filled with the scent of disinfectant and various chemicals, a mixture that was somewhat pungent.
The flu this time was fierce; many had already died. Fortunately, Country A had taken quarantine measures early on, but it was still uncertain whether the outbreak could be stopped.
The top priority right now was to quickly develop an influenza vaccine.
Lan Jin and Wei Yufeng both donned heavy protective suits, carrying with them heavy hopes.