My granddaughter gave me a mecha for her birthday, and the scientific community went crazy

Introduction: Xu Fan is a student and welder. He received an order and asked to weld a 500cm mecha. The more sci-fi, the better! It was a birthday gift from a beautiful client to the scientist grandfather, and she said she had enough money. It was too difficult and I was about to give up. I activated the Super God Technology System and the mecha was successfully manufactured. On the day of the birthday banquet, the mecha was unveiled, and its sharp and stylish appearance caught the attention of countless people. The beauty was confused: I seem to have written an extra zero in the mecha height requirement! Just when people thought it was just a model, the mecha's engine spurted out blue flames, and violent air waves exploded throughout the venue, knocking all the guests off their feet!