My Father Hides His Brilliance with Simplicity

Plot Synopsis

Zhang Zhiyuan was originally a leading figure in the field of mechanical manufacturing, presiding over the research and development of many important national equipment. After retirement, he worked as a cleaner in his son Zhang Xiaohai's factory. Zhang Xiaohai didn't know his father's true capabilities and just regarded him as an ordinary old man. During a mechanical technology exchange conference, Zhang Xiaohai inevitably felt inferior in front of a group of industry predecessors and was even ashamed of his cleaner father. However, he was surprised to find that whether it was the beautiful boss who had great influence in the industry or the daughter of the president of the industry association, they all became extremely respectful when facing his father. This greatly shocked Zhang Xiaohai. Could it be that his father was really a big shot?