I graduated from Japanese as an undergraduate. After graduation, Japanese majors are mostly in big cities such as Beishangguang and Dalian, where there are many Japanese enterprises or Japanese-funded enterprises. There are more people who study small languages, which is better than some unpopular majors, but the treatment is average. Language is just a tool, and it is best to combine it with other majors, such as computer and accounting, so that the employment development prospects are brighter.
In recent years, Japan's economic downturn and rising labor costs in China have led to fewer and fewer Japanese enterprises in mainland China and increasingly fierce competition among Japanese graduates.
To sum up, if there is a better choice, consider other majors.