Japan discriminates against women seriously. Women can't remarry within 9 years after divorce, but men can. A married woman can only be a housewife. The single rate in Japan is relatively high, and it is even popular not to get married in recent years.
Japanese women must resign after marriage and become full-time wives, specializing in housework and in charge of financial power. This is not realistic in China. Unless the husband has a high income, working alone will bring great economic pressure.
If you follow the traditional way of life, Japanese wives are really nice. But according to China's national conditions, marrying a Japanese wife is out of date.