Chinese drug trafficker Zhang Zhidong (second from right) extradited to the U.S. [Captured from the Mexican Security Minister's X post. [AFP=Yonhap News file photo]

A story has recently emerged and garnered significant attention about a Chinese man in his 30s who, after graduating from one of China's most prestigious universities and living a promising life, became one of Mexico's most notorious drug kingpins before being arrested and extradited to the United States.

According to a report by the British broadcaster BBC on the 13th, Zhang Zhidong (39), who was arrested by Mexican authorities in 2024 and is currently standing trial in the U.S., is an elite graduate who earned a degree in Spanish from Peking University in 2010.

After graduation, he moved to Mexico and joined a Chinese mining company, where he earned recognition for his professional capabilities and climbed to a senior position.

A university classmate who worked at the same company under the alias "Alex" recalled Zhang as someone who "had excellent negotiation skills and was highly adaptable to any environment."

Alex added that working in business in Mexico often involves entanglement with criminal organizations, including the drug cartels that dominate the region, noting, "He had the ability to build relationships with anyone of significance in the area."

Although the Chinese mining company Zhang worked for went bankrupt in 2013, he did not return to his home country.

While his exact activities after that time are not definitively known, a year or two later, he began posting on WeChat, the social media platform, offering his former Peking University classmates favorable exchange rates for converting currency into U.S. dollars.

Acquaintances assumed he was running a money laundering business, but it is possible that he began his involvement with drug cartels during this period. According to an indictment filed in a U.S. court last year, Zhang is accused of operating a large-scale drug trafficking and money laundering organization since June 2016.

Enrique, a pseudonym for a high-ranking member of a Mexican drug cartel, stated that insiders referred to him as the "King of Fentanyl" or "Brother Wang," adding, "He was a truly important person. He was the best."

Enrique recounted that Zhang quickly became close with the cartel's core figures after beginning a romantic relationship with a female relative of one of the cartel leaders.

Fentanyl seized by the U.S. Drug Enforcement Administration, disclosed in 2016 [AP=Yonhap News file photo]

Zhang appears to have played a pivotal role in producing and distributing fentanyl, a synthetic opioid 50 times more potent than heroin, in Mexico. After Zhang's arrest, one cartel member even confessed, "We had to build an entirely new supply chain from scratch."

Enrique also confirmed, "Zhang was the one who built the supply chain."

Fentanyl, which claims tens of thousands of lives worldwide each year, is primarily sourced from China, which is identified as the main exporter of its precursors (raw manufacturing materials).

Because of this, fentanyl has become a central issue in U.S.-China tensions. In December of last year, the U.S. government even designated fentanyl and its precursors as weapons of mass destruction (WMD).

Mexican authorities allege that Zhang is responsible for the export and distribution of over 1,000 kg of cocaine, 1,800 kg of fentanyl, and 600 kg of methamphetamine, estimating that he generated over $150 million (approx. 223.4 billion KRW) in annual drug sales revenue.

The BBC reported that when Zhang appeared in a New York court last year, the then-Deputy Attorney General Todd Blanche described him as "one of the most dangerous drug traffickers in the world."

Although arrested by Mexican authorities in October 2024, Zhang garnered further attention for his bold escape, which spanned the globe.

Following his initial arrest, a Mexican court issued a questionable ruling granting him house arrest instead of imprisonment. Zhang managed to drill a hole through a wall in his home to escape, subsequently using a private jet to travel through Cuba toward the Russian border.

However, Russian border officials discovered his forged documents and returned him to Cuba, after which Zhang was eventually sent back to Mexico and subsequently extradited to the United States.

Alex expressed bitterness upon hearing the news of his arrest, noting that his former classmates were in shock and stating, "He is likely one of the most famous individuals to ever graduate from Peking University."

Fentanyl and cash seized by the FBI during an operation in Georgia in 2025 [EPA=Yonhap News file photo]