First, the move raised the risk of Japan slipping into crisis. Once a conflict occurs, Japan is likely to stay out of the way. Secondly, China and Japan have done a lot of work in crisis management in recent years, but Japan's operation has actually pushed up the crisis. Japan should be cautious about this.
Finally, Japan's military deployment is getting closer to the front, which may have an impact on the peace and security of the entire East Asian region. Japan should take the overall picture of China-Japan relations into consideration and minimize risks.