*A City of Sadness* (1989), Hou Hsiao-hsien's historical masterpiece, is a landmark of Taiwanese cinema and an enduring classic for Chinese-speaking audiences the world over. When the film's 4K restoration was set for global re-release, LI TRUST handled the high-speed cross-border transfer of the restoration master. Digitally restored films typically run several times the size of the original — a complete master for a 120-minute 4K restoration can range from 2TB to 5TB. LI TRUST's dedicated transfer lines are purpose-built for ultra-large files, using resumable transfer and block-level verification to ensure file integrity even under network fluctuation. The 4K restoration of *A City of Sadness* was successfully delivered to distributors and film archives worldwide, providing the technical backbone for this classic's digital rebirth.