On March 16, 2026, lawyers Yang Lun and Cai Mengfei from Beijing Long’an (Guangzhou) Law Firm were invited to serve as arbitrators for the 23rd Vis East Moot International Commercial Arbitration Debate Competition. This year’s Vis East Moot, held in Hong Kong from March 16 to 19, attracted 170 renowned universities from over 30 countries, including Peking University and the City University of Hong Kong, which sent teams to compete.

To serve as arbitrators in the Vis East Moot often requires excellent skills at all levels. Lawyers Yang Lun and Cai Mengfei have a solid background in law, are familiar with core professional knowledge such as international commercial arbitration rules and international trade law, have rich experience in foreign-related legal practice, uphold independent and impartial professional ethics, and have fluent foreign language communication skills and rigorous logical judgement ability. They both are new talents in the field of foreign-related law.

Lawyer Cai Mengfei arrived at the venue for the Vis East Moot competition

Lawyer Yang Lun arrived at the venue for the Vis East Moot competition

During the competition review process, the two lawyers demonstrated their professional capabilities in the legal field from an international perspective. Lawyer Yang Lun was invited to serve as an arbitrator for the Vis East Moot. With his rigorous, impartial professional qualities, he adhered to the principle of impartial arbitration, drawing on his extensive experience resolving cross-border disputes, professionally evaluated the contestants’ arbitration skills and their practical application, and completed all review work with a serious, responsible attitude.

Lawyer Yang Lun at the DEPARTMENT OF JUSTICE

Lawyer Cai Mengfei made objective judgments from the dimensions of legal logic, performance, and professional quality. She fully demonstrated the solid professional ability and conscientious professional attitude of foreign-related lawyers.

Lawyer Cai Mengfei took a group photo with other arbitrators

Lawyer Cai Mengfei, Lawyer Yang Lun, and the other arbitrators participating in the concurrent arbitration competition took a group photo together

Lawyer Cai Mengfei, Lawyer Yang Lun

With other arbitrators participating in the concurrent arbitration competition

Lawyer Yang Lun took a group photo with other arbitrators

As young lawyers who have been deeply involved in the field of foreign-related legal services, Yang Lun and Cai Mengfei were invited to participate in the 23rd Vis East Moot with their solid and excellent professional skills, fluent and precise English expression ability, and their rich experience in foreign legal practice accumulated over the years. As a highly influential international commercial arbitration competition, Vis East Moot sets strict standards for professional competence, language proficiency, and practical experience of arbitrators. The fact that the two lawyers were invited to participate in this competition is strong proof of their comprehensive legal capability. It also reflects the wide recognition of Beijing Long’an (Guangzhou) Law Firm for its outstanding performance in international commercial arbitration.

The two lawyers were invited to participate in the top international commercial arbitration debate competition. This matter is not only a full recognition of the professional capabilities of lawyers Yang Lun and Cai Mengfei by the competition organizing committee, but also demonstrates the sincere enthusiasm and professional responsibility of the two lawyers in the field of foreign-related law. It also reflects the hardcore capabilities of young Chinese foreign-related lawyers with international perspectives and professional expertise in the new era, as well as their youthful vigor of being enterprising and diligent. They took part in Vis East Moot as arbitrators, which not only fulfills the responsibility of young legal practitioners, but also accumulates valuable experience for the improvement of their own foreign-related legal service capabilities, and injects more vitality into the development of foreign-related legal business of the law firm.

Competition Overview

The Vis East Moot International Commercial Arbitration Debate Competition is a renowned legal competition in the field of international civil and commercial law. Given the continuous rapid development of the Asian economy, as well as the increasing number of international commercial transactions and cross-border disputes in Asia, this competition has been established and continues to exist. It also provides legal students, academics, and professionals with practical opportunities and rich experience in international arbitration and trade law, all within an Asian context.

The Vis East Moot Competition is the sister competition to the Willem C. Vis International Commercial Arbitration Moot in Vienna. Given the continuous and rapid expansion of Asia’s economy, international commercial transactions and, inevitably, cross-border disputes in Asia have been on the rise. The Vis East Moot provides law students, academics, and professionals with a similar exposure to, and experience in, international arbitration and trade law as the Vis Moot in Vienna, but with an Asian context.

Lawyer Profiles

Lawyer Cai Mengfei

Lawyer Cai Mengfei holds a master’s degree in procedural law from Renmin University of China. She is one of the new talents in foreign-related law practice in Guangdong Province. She is currently a lawyer at Beijing Long’an (Guangzhou) Law Firm, working mainly from its Guangzhou office.

Lawyer Cai Mengfei has been practicing law for many years. She specializes in dispute resolution, intellectual property, international trade, and debt collection. She has extensive experience in resolving complex legal issues, especially in applying theoretical knowledge to practical situations.

Lawyer Cai has provided legal services to several large companies, foreign companies based in China, and Sino-foreign joint ventures. Her services cover various areas such as new consumption, new media, and construction engineering. She has successfully resolved domain name disputes, construction project settlements, and trademark protection issues. She has also helped clients with equity investment frameworks, providing comprehensive legal services. Her work has been widely recognized.

Lawyer Cai Mengfei holds a master’s degree in procedural law from Renmin University of China. Her working languages are Chinese and English. Before joining Beijing Long’an (Guangzhou) Law Firm, she worked at several leading domestic law firms.

Lawyer Yang Lun

Lawyer Yang Lun graduated from the Law School of Sun Yat-sen University and the Law School of Vanderbilt University in the United States, earning a bachelor’s and master’s degree in law respectively. Since starting his practice, he has focused on providing legal services related to foreign-related companies, intellectual property, and cross-border dispute resolution. Yang Lun is currently one of the new talents in foreign-related law practice in Guangdong Province. He also serves as the deputy secretary-general of the Haizhu branch of the Guangzhou Oumeisuoshanghui association.

Lawyer Yang Lun has provided legal services to several well-known multinational companies, large state-owned enterprises, and private companies. His services include corporate foreign investment, labor relations, intellectual property protection, and data compliance. In terms of expanding into international markets, Yang Lun is a researcher at the Long’an Bay ASEAN Law Research Center. He has established a rich network of cooperation services in several major Asia-Pacific countries, including the United States, Singapore, Australia, New Zealand, Thailand, and Vietnam. Before joining Beijing Long’an (Guangzhou) Law Firm, Yang Lun worked at two leading domestic law firms.

Long'an News | Lawyers Yang Lun and Cai Mengfei from Long'an Guangzhou have been invited to serve as arbitrators at Vis East Moot