In short:
A live-stream broadcast of China’s military parade has captured Xi Jinping and Vladimir Putin discussing biotechnology’s potential to extend life.
An interpreter translating Mr Putin can be heard saying in Mandarin that human organ transplants could let “us live younger and younger, and perhaps even achieve immortality”.
Mr Xi responded that it may be possible for people to live to 150 years this century.
I’m not sure if they will transplant head to another body or to the robot or just make a wolverine with artificial heart. China have it’s own rules.
https://interestingengineering.com/science/china-paralyzed-patients-walk-brain-spinal-implant
If that is really true, they can probably create many more cybernetic devices. Far as keeping dear leader alive that way they would need to keep secrecy of it tight enough that nobody would be aware of it until it was too late.