From an armed police special forces member to a grassroots policeman and then to a municipal leader, Lu Feng's eighteen-year growth trajectory is full of hard work and perseverance. After returning from the army due to an injury, he refused to be comfortable. He continued his original intention of olive green with navy blue, and worked hard at the grassroots police station to solve people's livelihood cases. When he entered the officialdom, he did not be vulgar or interested in camp. He kept the bottom line in the game and showed his responsibility in tackling difficulties. From rural revitalization to urban renewal, from resolving the backlog of petitions to adhering to green development, the identity has changed repeatedly, but the original intention of serving the people has always been unwavering. This is an epic story of the growth of grassroots cadres, explaining that faith has nothing to do with status and responsibilities have no regard to positions. Only by hard work can one be tempered into steel and fulfill the life oath of serving as an official and benefiting the country.