He was going to attend an ASEAN meeting at Jakarta but he did not attend.

Photo Credit @ News Cgtn

Chinese Foreign Ministry said that he missed the meeting due to health reasons.

Photo Credit @ Asean

There are rumours that he was having extramarital affairs with the Chinese journalist.

Photo Credit @ United K Magzine

This affair can be a reason for his missing.

Photo Credit @ Flipboard

Last year Chinese tennis player Peng Shuai also went missing.

Photo Credit @ News4jax