Awakening the Spark: Civilization's Last Guardian

Reborn at twenty with memories of his past life, Lin Yuan's plan was simple: build a tech empire, fix his family's mistakes, and live comfortably. But when his 'harmless' inventions catch the eye of national security, everything changes. Summoned by shadowy officials who've been 'waiting for him,' Lin discovers his second chance was no accident—it was a mission. Armed with the Civilization Advancement System, he must push humanity's technology forward to face an ancient darkness consuming entire galaxies. The clock is ticking, and Earth's survival rests on one man's genius.