Core Viewpoint - The Shanghai Urban Construction Vocational College's students are conducting a six-month digital survey and mapping of ancient bridges in the Fengxian District, utilizing advanced technologies to create digital archives for preservation [1][2]. Group 1: Project Overview - The project involves a team of students from the ancient architecture engineering program who have been surveying ancient bridges since April, focusing on the rich ancient bridge resources in Fengxian District [1]. - A total of 51 ancient bridges have been digitally mapped using 3D laser scanning and drone photography, with 14 bridges already having comprehensive digital records established [1]. Group 2: Findings and Challenges - During the field surveys, students discovered that some inscriptions and patterns on the bridges had eroded or disappeared, highlighting the need for detailed documentation beyond existing literature [2]. - The process of complete digital mapping for a single bridge can take up to seven days, with challenges such as difficult access requiring alternative transportation methods [3]. Group 3: Technological Implementation - The team is creating high-precision point cloud models with millimeter-level accuracy, which involves approximately half a day for scanning and an additional 3 to 5 days for drafting and modeling [3]. - The results of the surveys have been showcased at a local community center, attracting significant public interest [3].