Combined with the feedback from the sales market, I think the short work experience is not short, but it can't be short for more than 6 months. Students usually practice in school for several months, and some students, gap year, go abroad to study and take the postgraduate entrance examination, so several months of internship time is not short. For real work experience, it's better to be more than one year, but if it's 6- 12 months, then I think this experience can be written on your resume or told during the recruitment interview. When you really have less than six months to announce your job, it is very easy to become a problem-it is very likely that the other party will not come to you for an interview when they see your resume.
If it is within 3 months, but your overall vacancy is not very long, then you can write directly without writing. Resume, not a full calendar, means you can choose what to write or not. I have always been persistent about resumes and job interviews. To be honest, it means that everything you write must be true, but you really don't have to write it all. For example, in the past two years, you had a two-month job and left before the internship. Then you take a job for more than a year, then you don't write this job for two months at all.
If the short-term job is in the same direction as your current application, and it is highly relevant and helpful-then you can write. Remember to write down the assistance of this short-term job to the present job, such as relevant practical work experience. If the short-term job has nothing to do with the position you are applying for, then there is no doubt that you don't need to write. In addition, it is not recommended to replace this work experience with other work experience, which is a fraud. If the company has a background check, it may lose the job.