When writing a formal or business letter, presentation style and format is key to making a good first impression. These templates provide excellent examples of how to structure such a letter, and include sample content to act as a guide to layout.
Letter Template for The Hong Kong University of Science and Technology (Guangzhou) HKUST(GZ).
This template heavily depend on template at: https://www.overleaf.com/latex/templates/hkust-letter-template/jkcyqtjgpqgq
And visit here for any issues at: https://github.com/ViGeng/latex-template/tree/main/templates/hkust-gz-letter