When Breaker was a little kid, he would always dropped everything that he touched even if he didn't mean to drop it. He isn't reliable because of his actions and with that being said, he was nicknamed as breaker.
When breaker grew up, he outgrew his name, so people call him breaker's bridge because of how fact and accurate he was and building and repairing bridges. Since the emperor knew that breaker was good at bridges, he told breaker that he had to build him a bridge or his head will be cut off.
Breaker spent many days or even months to try and finish building the bridge but the river flows was so hard that it broke every time breaker rebuilt a new one. There was so much water flowing because there was snow and the snow melted and then it caused this disaster.
Breaker struggled to build the old man a bridge so the old man gave breaker another chance to do him something but this time breaker has to build the old man a new crutch in a certain amount of time.
Breaker threw the 2 pellets that the old man gave to him and then 2 peir appeared which made it easier for breaker to build the bridge.
Breaker then realized that the old man was 1 out of 8 immortals.