1. First, find a teacher who is willing to take over. Many teachers don't like wild roads, and there is a high probability that they will be postponed.

2. How big the steps are, how difficult it will be later. This is not to say that I can bear hardships. Think about being a doctoral student. While others are exploring new fields, you are still making up your undergraduate or master's background. So those high-impact magazines have nothing to do with you from beginning to end.

3. The greater the pace, the more likely it is to delay the completion and accumulation of results. Are you mentally prepared?

At first, I just thought it might be easier to send papers in another direction, and I tried to find a teacher who would recruit me. When I came, I found it was not so beautiful. Because I don't understand many things, my productivity is actually greatly restricted. And because it is a new field, I have a poor grasp of the hot spots in the current research field, and I don't understand many established rules. These all need to spend a lot of time and energy to make up.

First, the country's long-term strategy. The State Council clearly pointed out in "Made in China 2025" that we should vigorously cultivate compound talents, and the Ministry of Education also issued supporting policies. Cross-disciplinary students are obviously the elite of compound talents.

Second, the life and death of the profession. Specialization of disciplines is a trend now, but this subdivision has led to the end of the profession. Therefore, if the discipline wants to survive, it must recruit talents with an open mind. That is, if a major or discipline wants to flourish, it must inject fresh blood from the outside, and interdisciplinary students are such fresh blood.