But they are social professional training institutions, so the cost is relatively high and they have to support so many staff. In fact, if it is the first time to enter the interview, it is recommended to attend a training class to learn, so that you can quickly get used to the interview routine, get ready, and master the interview skills. If it is not the first interview, it is recommended to find a partner to practice together, or you can practice by yourself, such as recording and practicing in front of the mirror. You can see the loopholes and deficiencies in the answer through playback or mirroring, and then make targeted improvements.