Zhang Yimou's spy thriller unfolds across the snowfields of northeastern China at minus forty degrees, following four operatives guarding a secret in the depths of desperation. *Cliff Walkers* marks a new high for the Chinese spy genre — and the most commercially minded pivot of Zhang Yimou's career. LI TRUST provided the technical support behind the film's international version mastering and release file delivery. Spy films carry an inherent distribution sensitivity around content confidentiality: before theatrical release, any file transfer of any version must take place at the highest security level. For the international version of *Cliff Walkers*, LI TRUST configured a dedicated private transfer channel, using a dedicated-line delivery mode separate from public cloud services to ensure absolute content security. After the transfer was completed, LI TRUST's technical team assisted the distributor in final file-integrity verification, providing technical endorsement for the film's confidential release requirements through a secure, compliant operating procedure.