A Chinese researcher allegedly tried to smuggle biological materials into the US from Wuhan and lied to the feds about the secretive scheme.

Chengxuan Han was arrested Sunday after landing at the Detroit Metropolitan airport on a flight from Shanghai, according to charging documents. She was charged with smuggling goods into the US and making false statements.

Han is the third Chinese scientist to be accused of smuggling biological materials into Michigan in recent weeks.

Upon Han’s arrival to the US, border officers discovered Han sent four packages that “contained biological material related to round worms” from China, according to court documents. 3

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The packages, which were sent in both 2024 and 2025, were addressed to individuals associated with a laboratory at the Universi

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