Just buy a stamp online, or leave it blank. Regarding the internship report, the instructor basically didn't read two materials. At that time, the instructor had a lot of things to do, and his graduation thesis was not up to standard. Failing the defense is the most important thing, and nothing else is relevant, so the teacher won't care too much. A serious teacher will only turn to the back and write a passing comment. No one will fail the report. I worked as a thesis supervisor before. The above comments were written by our students on behalf of the teachers, and the materials were also approved on behalf of the teachers. No matter what is not stamped, I don't read the contents of the internship diary. It's just a process, and all the comments have passed.