1. Xinzhou is in Nagano, and it snows five meters in Japan, right? What happened in Nagano Niigata was that the bridge was broken.
2. Finish college in China and learn Japanese in advance. Although exchange students are subsidized, the money spent is the same. If you want to go abroad at home, you'd better apply for an institution yourself. There are many choices. If you are a major, I suggest you go to Dongwai University or Osaka University. The reason is that most of the language learners are specialized schools. Tokyo Foreign Studies and Osaka University, which merged Osaka Foreign Studies, are the best. Japanese college students did well in the exam, so don't worry. They just need to contact the professor to prepare for the interview, have reasonable research projects and specific content, and see the interview of the professor they want to apply for. You must choose a good place, or you will regret it. Although it is a national university, the national universities in cities and rural areas are completely different.
According to what you said, if you don't have much money at home, you can consider some rural schools if you want to come out, so the cost is lower, and then good schools can give scholarships to graduate students. Now the policy is relatively open, don't worry, such as Hiroshima University, I hope I can help you.