
A third Chinese scientist has been charged with smuggling biological materials into the United States after a University of Michigan student and her boyfriend were caught last week.
At Detroit Metropolitan Airport on Sunday, Chengxuan Han was taken into custody and accused of smuggling items into the United States.
Police allege Han sent four packages which ‘contained biological material related to roundworms’ from China to the US.
The packages were sent between September 2024 and March 2025 and addressed to people linked to the University of Michigan laboratory.

According to court filings, Han first denied mailing the goods. Later, she said they contained plastic cups instead of Petri dishes.
She eventually acknowledged mailing the samples, which she had gathered while conducting research for her PhD in Wuhan, China, according to the records.
The charges come less than a week after University of Michigan postdoctoral fellow Yunqing Jian, 33, was charged alongside Zunyong Liu, 34, for attempting to smuggle a weapon of ‘agroterrorism’ into the United States in a diabolical plot allegedly linked to the Chinese Communist Party.
Liu arrived in the United States from China in July 2024 carrying four small baggies of Fusarium graminearum – a product responsible for causing billions of dollars worth of damage to livestock, wheat, barley, maize and rice globally each year.

The three defendants are connected to the same university lab.
Han was originally denied a visa to the US in March 2025, mainly because she struggled to conduct her required visa interview in English, which is a necessity.
She was unable to respond to simple enquiries about her background or area of study.
Two weeks later, Han applied again and during her second interview ‘spoke credibly about her educational background, current studies, and post graduate plans.’

Han is also accused of lying to border authorities who asked her about the packages she had previously sent.
When officers attempted to check her phone, they learned it had been wiped three days before she arrived, the court documents state.
After Jian was first arrested last week, FBI chief Kash Patel delivered a terrifying warning.
‘This case is a sobering reminder that the CCP [Chinese Communist Party] is working around the clock to deploy operatives and researchers to infiltrate American institutions and target our food supply,’ he said.
If successful, the plot ‘would have grave consequences… putting American lives and our economy at serious risk.’
The duo have been charged with conspiracy, smuggling, making false statements and visa fraud.
In a startling twist, the criminal complaint reveals that Jian may have been victorious in smuggling pathogens into the United States years before.
The research student, who reportedly had pledged her loyalty to the CCP, had revealed in messages to Liu that she once carried a pathogen in her shoe on a trip to America in 2022.
‘Electronic evidence also shows that Jian has been involved in smuggling packages of biological material into the United States on prior occasions,’ the complaint said.
Separately, messages revealed she had arranged for another associate from China to send her a book with a plastic baggie of the substance hidden inside in early 2024.
The shocking disclosures make one wonder what Jian and Liu intended to accomplish with the virus.
The complaint also revealed that Jian had obtained funding from the Chinese government to conduct similar work on the same pathogen while she lived in China.
Her boyfriend is employed at a Chinese university where he also studies Fusarium graminearum.
The duo had ‘discussed the shipping of biological materials and research being done in the laboratory’ before he arrived in the United States.
If ingested by people or animals, the toxins of Fusarium graminearum result in vomiting, liver damage, and reproductive abnormalities.
‘The alleged actions of these Chinese nationals, including a loyal member of the Chinese Communist Party, are of the gravest national security concerns,’ US Attorney Jerome Gorgon Jr. stated.
In July 2024, Liu was turned away at the Detroit airport and sent back to China after changing his story during an interrogation about the red plant material found in his backpack, per the FBI.
He originally claimed he knew nothing about the samples but later admitted he was planning to use the material for research at the lab, the complaint described.
The FBI said authorities found a scientific article on Liu’s phone that was titled, ‘Plant-Pathogen Warfare under Changing Climate Conditions.’
A week before he arrived in the US, Liu traded messages with his partner, who said: ‘It´s a pity that I still have to work for you,’ according to investigators.
FBI agents visited Jian at the campus lab in February, as she told them: ‘100 per cent no,’ when asked if she had been helping Liu with the pathogen at the lab.
But her text messages indicated she was researching the product before her boyfriend arrived in the country.
The agency said it found a signed statement on her phone expressing her support for the Communist Party of China.
The university does not have federal permits to handle Fusarium graminearum.
In a statement, the University of Michigan said it did not receive ‘funding from the Chinese government in relation to research conducted by the accused individuals.’
‘We strongly condemn any actions that seek to cause harm, threaten national security or undermine the university’s critical public mission.’
Gorgon Jr. described the allegations against the ‘two aliens’ as the ‘gravest national security concerns.’
The US does not have an extradition treaty with China, meaning Liu’s arrest is doubtful unless he returns.
The charges come as the Trump administration strives to crack down on international students on US campuses, promising last week to start withdrawing the visas of some Chinese students, including those studying in ‘critical fields.’
China is the second-largest country of origin for international students in the United States, behind only India. In the 2023-2024 school year, more than 270,000 international students were from China, making up approximately a quarter of all foreign students in the United States.
‘Under President Trump’s leadership, the U.S. State Department will work with the Department of Homeland Security to aggressively revoke visas for Chinese students, including those with connections to the Chinese Communist Party or studying in critical fields,’ Secretary of State Marco Rubio stated.
There appear to be numerous harmful, intrusive flora and fauna from China unexpectedly appearing in the US, and they are the enemy of the state.
China is running rings around the West. Stealing technology, smuggling in bioweapons, infiltrating agents, buying Pacific island leaders and the list goes on, and what’s more, they do it blatantly and just don’t care.
Everyone was so quick to hop on the bandwagon to deport Latins/Hispanics and ban Africans but there was complete silence on the Chinese.
The University of Michigan shouldn’t be allowed to enrol students from China, or any other country come to that. No American university should be permitted to enrol them.
Universities need to quit doing studies with Chinese researchers – ‘fool me once, shame on you, fool me twice, shame on me.’
At the moment these are the only two who have been caught, that we know of, but there are probably more – sleepers everywhere.
This lot would start a world war without even firing a shot.
The US government need strict travel prohibitions put on the Chinese. The Wuhan virus was simply a warning shot.
Nothing good comes out of Wuhan, and it seems like WWIII has already begun, but covertly.