Russian President Vladimir Putin and Chinese leader Xi Jinping were caught discussing how to use organ harvesting to become immortal.

During Putin's visit with Xi on Wednesday, the two leaders spoke while attending China's Victory Day parade. The men, both 72, could be heard on CCTV discussing aspirations to live to 150.

"Earlier, people rarely lived to 70, but these days at 70 you are still a child," Xi told Putin, according to a translation.

"With the development of biotechnology, human organs can be continuously transplanted and people can live younger and younger, and even achieve immortality," Putin agreed.

"Predictions are, this century, there is also a chance of living to 150," Xi replied.

Last year, Putin reportedly ordered the Kremlin to rapidly increase anti-aging research.

"It's creepy to say the least," Michael Allen, a former national security official, told Fox News. "But it was strange and weird, no doubt about that. And deeply menacing."

Watch the video below from Fox News.