Many registration forms actually only need a few key information, such as name, ID number and home address. Self-introduction and autobiography, you can write whatever you like, and no one will read it carefully. Moreover, not only the application forms of college students, including resumes and personal files, but also autobiographies can be scribbled.
Don't ask me how I know. I won't tell you that I tried to write an autobiography for half an hour when I reported on the university, and people just threw it in the box without reading it.