Destiny Asked Me to Sacrifice, so I Built a Machine to Ascend

Grandpa asked him to shine on the lintel. The Master asked him to sacrifice himself for others. The master asked him to sacrifice to the common people. Gu Chengze memorized these three sentences. Then he took out the copper dragonfly from the hole in the table and started to make something of his own. No one ever asked him who he wanted to be. He decided to answer it himself.