本次竞赛正式报名提交截止时间为 2026 年 8 月 20 日 24:00 时，提交的时间以电子文件上传成功的时间为准。
The official registration deadline for this competition is 24:00 on August 20, 2026. The submission time shall be subject to the successful upload time of electronic documents.
一、竞赛背景
I. Competition Background
