Generally speaking, it is not difficult for graduate students to take the friar exam, because you follow your tutor all year round, unless you have a particularly stiff relationship with your tutor.
Generally speaking, people who go to college may have easier jobs and higher wages, but these are just assumptions.
By the way, the most basic purpose of studying abroad is to exercise your willpower and hard-working spirit. As long as you are not tempted by Japanese information, it is easy to take care of both work and study.
Living expenses, I don't know where you are going to take the postgraduate entrance examination. Osaka is at least 80,000 yen (about 6,400 RMB) a month.
Speaking of the development after graduation, I can only remind you that Japan's current economic situation is quite bad, and you can get a glimpse of it by looking at the high exchange rate.
If your ability and academic performance are good and your family is good, I suggest you stay in China for development. After all, our country is much safer, isn't it
If you really want to further your studies and improve yourself, it's not bad to try Japan. As long as you have achievements, you will have a good future.
As a country, Japan attaches great importance to a person's ability and character. If you are frivolous and lazy, you will be discriminated against even if you are Japanese. If you are honest and polite, no matter which country you come from or which country you study in, you will be respected by the local people.