A Useless Mechanic? the Materials I Consumed Will Be Returned Ten Thousand Times

The game merges with reality, and the era of job transfer for all people is coming. Jiang Chi changed his job to the sewer profession [Mechanic] and awakened the hidden talent [Unlimited Return]. The materials consumed at level 1 will be returned a hundred times, and the materials consumed at level 1 million will be returned ten thousand times! [Level 5 Blueprint: G-1 Coronal Floating Cannon] Consume 2 void crystals... Return void crystals: 2x5x100=1000... [Level 60 Blueprint: S-3 Luan Bird Aircraft Carrier] Consume 50,000 phase alloys... Return phase alloys: 50000x60x100=300 million... The materials are endless! The engine roars! Gunfire roars! Killing machines are being built one after another... Soon after, the cataclysm began, and the Abyss Demon finally broke through its restrictions. What greeted it was the lonely Jiang Chi and the army of machines in the sky...