@charlesyen, Congrats on your admittance. As a first-year engineering student, you will apply to your specific engineering major at the end of freshman year (provided all requirements are met). You will go through the same Entry to a Major (ETAM) process as students in College Station. Earning a 3.5 GPA or higher guarantees your first-choice major; however, please keep in mind, that last year, 90% of ALL freshman engineering students applying received their first choice major. Acceptance into a major allows you to study at College Station beginning your sophomore year (except for Ocean Engineering, a program conducted at TAMU Galveston). You can read more about the ETAM process here: https://engineering.tamu.edu/academics/advisors-procedures/entry-to-a-major