Earlier this week, the North Korean leader was gravely ill following heart surgery.

Media reports said that China had dispatched a team to North Korea to advise on Kim's health.

However, the reports about Kim's health are disputed as North Korea has not made any official statement regarding it.

The Chinese Communist Party's International Liaison Department departed for North Korea on Thursday. Those involved are keeping quiet about the nature of the trip, and even the sources that reported on the trip are keeping quiet regarding what it means for Kim's current state, Japanese media reported.