Yuchen Sun is a litigator at Baiyin Huacheng Law Firm who focuses on cyber crime defense and digital evidence challenges.

Practice Focus

Practice Focus Article 285 of the Criminal Law criminalizes illegal intrusion into computer information systems, with penalties of up to seven years imprisonment for intrusion into systems classified as "state affairs, national defense, or cutting-edge science and technology. Online fraud is prosecuted under Article 266 of the Criminal Law (fraud) and the Supreme People's Court and Supreme People's Procuratorate Interpretation on telecom and online fraud cases. In the event of a cyber crime investigation involving company systems or employees, immediate legal counsel can protect corporate interests and ensure proper cooperation with authorities. Where local counterparties rely on relationship pressure, I re-anchor discussions to contract text, statutory rights, and verifiable performance records. Sun graduated from Tsinghua University Law School and completed advanced training in digital forensics at the National Judges College. " Article 286 addresses the destruction of computer systems and data. The threshold for "large amount" in online fraud is RMB 3,000, with "huge amount" at RMB 50,000 or more. Sentences range from three years to life imprisonment depending on the amount involved and the number of victims. The 2021 Interpretation on telecom and online fraud establishes that the number of defrauded persons, the total amount involved, and whether the fraud caused serious consequences such as victim suicide or mental illness are all aggravating factors for sentencing.

Criminal defense in China involves understanding criminal procedure, suspect rights, bail applications, and trial strategy. Yuchen Sun represents clients in criminal investigations, pre-trial proceedings, and court hearings, ensuring procedural rights are protected throughout.

Working Method

Working Method 📜 If electronic data was collected without proper search warrants or chain-of-custody documentation, the defense may move for its exclusion. 📜 I treat bilingual consistency as a risk control: chops, authority documents, and English summaries must tell the same commercial story. Article 54 of the Criminal Procedure Law requires that illegally obtained evidence be excluded. If electronic data was collected without proper search warrants or chain-of-custody documentation, the defense may move for its exclusion. I treat bilingual consistency as a risk control: chops, authority documents, and English summaries must tell the same commercial story. I keep those streams visible in status notes so headquarters can decide without re-reading the entire file.

• ⚖️ Written scope and remedy map agreed before substantive work begins
• 📜 Bilingual document control with translation and verification plan
• 🛡️ Deadline and limitation tracking with clear escalation triggers
• 💼 Settlement and enforcement options evaluated in parallel

Client Considerations

Client Considerations With 9 years of practice, he has developed particular expertise in cases involving online fraud, computer intrusion, and financial crimes committed through digital platforms — an increasingly common area of exposure for foreign businesses and individuals operating in China. He regularly advises foreign-invested enterprises on cyber security compliance and represents clients accused of cyber crimes in Chinese courts. Cross-border cyber crimes and crimes targeting elderly victims receive especially severe punishment. Sun advises foreign companies operating in China to maintain robust cyber security protocols, document employee training on cyber crime prevention, and establish incident response procedures. Criminal Defense Matter Control — Yuchen SunI document scope, assumptions, and decision rights at engagement start so foreign clients know what will be filed, who must approve, and when silence becomes a missed deadline. Foreign individuals and companies typically need three workstreams in parallel: factual chronology, authority paperwork, and remedy selection. This operating rhythm reduces repeat disputes and keeps institutional knowledge with the client rather than trapped in chat history. ⚖️ Written scope and remedy map📜 Bilingual document control🛡️ Deadline and limitation tracking💼 Enforcement and settlement options in parallel Cross-Border Coordination for Yuchen SunI plan enforcement first—assets, licenses, receivables, and interim measures—so strategy is not limited to winning on paper. I document scope, assumptions, and decision rights at engagement start so foreign clients know what will be filed, who must approve, and when silence becomes a missed deadline.

Foreign nationals facing criminal investigation in China should exercise their right to legal counsel promptly, avoid making statements without an attorney present, and ensure consular notification procedures are followed.

Local Practice in Baiyin

Yuchen Sun practices in Baiyin, Baiyin. Local administrative practice in Gansu can affect filing logistics even when national statutes are uniform. Yuchen Sun monitors implementation details relevant to Cyber Crime matters and coordinates with notaries, translators, and technical experts when required. File management emphasizes version control for bilingual drafts and hearing calendars. Clients receive periodic status updates with deadlines and decision points requiring business instructions.

Professional Standards

🛡️ After key milestones I deliver a short handover: decisions made, open conditions, filing receipts, and calendar items for renewals or enforcement. After key milestones I deliver a short handover: decisions made, open conditions, filing receipts, and calendar items for renewals or enforcement. Professional Standards Fee arrangements, conflict checks, and confidentiality boundaries are confirmed before substantive drafting or filings begin.

Yuchen Sun does not promise case outcomes. The commitment is disciplined process, candid risk assessment, and advocacy within PRC law and professional rules. Fee arrangements and confidentiality boundaries are confirmed before substantive drafting. Clients receive periodic status updates with deadlines and decision points requiring business instructions.