This was clearly Dr. Silver Mask's diary and reflections—how unexpected for him that I would pry into his encrypted data hidden within the computer this way.
However, it seems my previous suspicion was wrong: there is no resurrection mechanism of the Great Demon Silver Moon in Changan.
Then why did Ying Lingyun have Chen Long kidnap Changan?
I continued to investigate the data, and then I found Dr. Silver Mask's diary entries left elsewhere.
"—I cannot understand why the original is mass-producing modified humans in the outside world, what connection it has with his desire to resurrect the Great Demon Silver Moon, nor can I grasp how he could go to such lengths for his own selfish desires.
"I cannot understand his love for Silver Moon.
"Is it because I am him, who became a scientist, and also him who never met Silver Moon? No, I at least understand what love is. Yet his love is too frenzied and distorted.
"If I ever met Silver Moon, would I become like him?"