Since it is on-the-job, write on-the-job, not fake. The other person can find out as soon as he checks. There is no need to tell such a lie.

But there are a few points you should pay attention to in your resume.

First, you must state your achievements in the original unit, and it is best to have clear projects.

2. Be sure to state the reasons for job-hopping, don't be vague and make the other party suspicious.

Be sure to state when you can take up your post in the new company. If the other person is in a hurry to recruit people, you will be worried when you are still at work, which will reduce your interview opportunities.