The vast majority of enterprises will do background checks, and the time of entry and exit is indeed one of the key concerns. It can be said that either the new employer does not do the opposite, but as long as it does the opposite, the entry time is necessary and the real situation can be basically found. Generally speaking, if the time difference between entry and exit is more than 3 months (for example, you say that you have worked for 2 years and 6 months, but in fact you have only worked for 2 years, and the difference is 6 months), it will basically be considered as a serious difference or problem. If the difference is within 3 months, it is generally tolerable or comprehensive to consider whether you can join the job. As long as you do well in the interview, most of you will be considered for employment.
Therefore, it is suggested not to exaggerate, and it is possible to be found out, or to be honest with each other and strive for higher wages and better opportunities by strength. Good luck!