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When it comes to the civil engineering major, many people think of four words – “grounded and wooden”. Even one’s impression of it remains tied to construction sites – laying bricks, building walls, digging ditches, constructing roads... Nowadays, something known as \"BIM\" has a profound impact on the construction industry, transforming people’s understanding of civil engineering. So, is civil engineering really just a \"brick-laying profession\"? What exactly is BIM, of which everyone is talking? What is BIM? In my sophomore year, I came across the National College Students’ Structural Design Information Technology Competition. I was attracted by the combination of the terms “structural design” and “information technology.” Although I had almost no relevant knowledge, I signed up for the competition out of interest. The competition spanned a relatively long period, during which I attended numerous online training sessions that helped me gain a deeper understanding of BIM technology. By repeatedly creating building information models for analysis, I also became much more proficient in using the relevant software. The 3D model created during competitions is known in English as BIM, which stands for Building Information Modeling, or building information model. At first glance, BIM technology is essentially similar to the special effects used in Hollywood blockbusters; it is a method that originates from reality yet goes beyond it, allowing for the compensation of its shortcomings. It not only provides visual enjoyment and awe but also reflects humanity’s fantasies and expectations for the future. The experience of participating in competitions had a significant impact on me, and my interest in BIM (Building Information Modeling) grew even stronger. As a result, I often attend the ‘Building Information Modeling’ courses offered by the college for undergraduate students, in order to learn more about Revit software and to gain a deeper understanding of BIM technology and its applications. Modeling for the “Building Information Modeling” course assignment: Essentially, BIM is a database that is created based on the intuitive physical form of a building, and it contains all the data and information from various stages. In this context, the meaning of \"information\" includes not only visual information described by geometric shapes, but also a large amount of non-geometric information, such as the fire resistance rating of materials, the cost of components, and information related to their procurement. In my view, the creation of BIM, or Building Information Models, represents a revolution in the construction industry, and it will serve as a powerful tool for project management. It is applicable to all stages of project construction and is used in various areas throughout the project’s life cycle. It features visualization, coordination, simulation, optimization, and other capabilities. 1. Visibility: \"What you see is what you get.\" BIM transforms the traditional linear components into three-dimensional, solid graphical representations that are displayed before people’s eyes; it is a visualization system that enables interaction and feedback among these components. More importantly, through building visualization, communication, discussion, and decision-making can take place during the design, construction, and operation phases of a project. 2. Coordination: Coordination is a key aspect in the construction industry. The BIM building information model enables the coordination of conflicts between different specialties during the early stages of building construction, and it generates and provides coordination data. It is able to respond promptly and effectively to problems that arise during project implementation. 3. Simulability: During the design phase, BIM can conduct simulation experiments for certain events that require simulation in the design process ； 4D simulation (with a timeline) can be used during the bidding and construction phases to determine appropriate construction plans, while 5D simulation (with a cash flow element) can be employed to achieve cost control. In the later operation phase, simulations of daily emergency response procedures can also be carried out. 4. Optimality: Accurate information influences the final outcome of optimization. BIM models provide information about the actual existence of a building, including geometric information, physical information, and regulatory information. BIM and the various optimization tools associated with it provide services for optimizing complex projects.