Longevity labs, “immortality islands” and grapeseed pills are part of China’s national project to conquer aging, despite sometimes shaky science and extravagant claims.

© Qilai Shen for The New York Times

Longevity labs, “immortality islands” and grapeseed pills are part of China’s national project to conquer aging, despite sometimes shaky science and extravagant claims.

Ryan Chen has turned an uncanny impersonation of President Trump into a social media career, and a mirror of China’s fascination with America.