The best way to become a seiyuu is to go to a seiyuu school in Japan for professional practice. Of course, this is also very complicated. First of all, you must be proficient in Japanese and get a professional certificate. Then your family must have money to provide you with the deposit, tuition and living expenses for studying abroad. So whether you can stay in Japan and become a seiyuu after graduation is still a question mark. China has no seiyuu career, only a voice actor. In this case, it is meaningless to study in Japan.
And it is really unrealistic for me to persuade the landlord to become a seiyuu. First of all, there are many seiyuu in Japan every year, and there are only a few newcomers every year. It is almost impossible to consider foreigners, and seiyuu's salary is very low. If you stay in Japan, the salary is not enough to live in expensive Tokyo, so if you want to think about it, of course, I hope the dream of the landlord can come true!