Zhang Yimou's spy thriller, set in the snow-covered wilderness of Northeast China at minus forty degrees, follows four figures guarding a secret in a desperate situation—Cliff Walkers represents a new high for Chinese espionage cinema and the most commercially-minded pivot in Zhang Yimou's career. The international version production and distribution file transfers were supported by LI TRUST. Spy genre films carry unique distribution sensitivity regarding content confidentiality. Any version of the file transfer before the film's release must be conducted at the highest security level. LI TRUST deployed a dedicated private transmission channel for the international version of Cliff Walkers, using a leased line independent of public cloud services to ensure absolute content security. After the transfer, LI TRUST's technical team assisted the distributor in final file integrity verification, providing a secure and compliant workflow that served as technical endorsement for the film's confidential distribution requirements.