Livestream Challenge: Developing Cutting-Edge Tech and Leaving Eagleland Stunned

(No heroine + cutting-edge technology + the whole world comes together) Su Zixuan perished alongside his enemy in an interstellar war. Reborn on Blue Star, he unexpectedly activated the “Livestream Challenge System.” Complete on-screen challenges to receive the corresponding cutting-edge technology; finish the tasks to obtain blueprints detailing how that technology works. As long as viewers believe he completed a challenge, he can earn Tech Points to exchange for advanced technology. To cure his younger sister's cancer, Su Zixuan keeps using the System to extract genetic technology. Viewer: It's way too hot, streamer! Cool things down! Temperatures plummet across the country, and the La Niña phenomenon disappears! The Eagle was on its deathbed, but sat bolt upright and urgently accused Huaxia of developing weather-control weapons! Fire chief: I gave you my retired fire engine, and you turned it into a missile launcher? Viewer: I want to see the streamer build a mech! Some island: Thanks for the combat mech, big bro! Watch me smash Shitou Mao! Viewer: If you've got the guts, streamer, flip the moon upside down! NASA: Wait, seriously! How did the moon turn over?! At some point, a whole crowd of top scientists started camping out in the livestream. Huaxia's antics grew increasingly outrageous, too: Turning deserts into fertile soil, world-beating chips, hydrogen energy, targeted drugs, fully immersive metaverses, limitless electricity from nuclear fusion, neutrino-beam anti-nuclear weapons... (The blurb has been harmonized.)