"When I saw the chorus members standing on Tiananmen Square wearing our shoeson the live broadcast, tears welled up in my eyes immediately." Xu Rongjin, head of the footwear business division of Cabbeenin Guangdong, could barely contain his emotion. That moment was not only the solemn commemoration of the 80th anniversary of the victory in the War of Resistance Against Japanese Aggression, but also a proud display of Chinese craftsmanship and technology from a Chinese shoe company.

In early August, Cabbeen received an urgent assignment: "Within 20 days, we need to produce 3,000 pairs of shoes with high standards." There were no detailed instructions; what remained was the responsibility to deliver. "Normally, such an order would take at least 45 days," Xu said. It was a task nearly impossible to fulfill. These "white shoes" needed the formal look of leather shoes combined with the comfort of sneakers, so that the wearer could stand for hours without fatigue, discomfort, or slipping.

The key breakthrough came through 3D printing. The shoes were printed integrally using photopolymer resin, cutting development time dramatically from 15 days to just two. Precision reached millimeter-scale, with subtle adjustments made according to differences in the foot shape of people from northern and southern China. The ventilated honeycomb-like structure provided effective shock absorption, pressure dispersion, and slip-resistance. The athletic insoles are removable and washable. The entire shoe underwent 20,000 bending tests and rigorous inspections to ensure "zero defects" when delivered.

On September 3rd, sunlight bathed Tiananmen Square. Three thousand students stood tall and resolute, with their voices echoing across the plaza. Beneath them were the 3D-printed white shoes witnessing this historic performance.

揭秘九三阅兵合唱方阵的3D打印“战靴”

“直播里看到合唱方阵穿着我们的鞋站在天安门广场，我的眼泪一下子涌了出来。”广东卡宾服饰鞋品部负责人许容金难掩激动。那一刻，不仅是纪念抗战胜利80周年的庄严庆典，也是一家中国鞋企以科技与匠心递交的国家答卷。

8月初，一个紧急任务突然降临。“20天，3000双鞋，标准极高。”没有细节，只有责任。许容金说：“平常这样一批鞋至少要45天。”这是一个几乎不可能完成的任务：“小白鞋”既要具备皮鞋的正式感，又要拥有运动鞋的舒适性，让每个人长时间站立不累、不闷、不滑。

关键突破，来自3D打印技术。鞋底采用了光敏树脂一体打印，将研发时间从15天缩短到2天，极大压缩了工期；精度高达毫米级，还根据南北方人脚型差异微调宽度与高度；鞋底透气镂空结构，仿生蜂窝设计有效缓震、吸压、防滑；内置可拆洗的运动鞋鞋垫；整鞋通过2万次弯折测试及严苛检验，确保出厂“零瑕疵”。

9月3日，阳光洒满天安门广场。三千学子肃立如松，歌声铿锵。他们脚下，每一双小白鞋静默而坚定地支撑着这场历史性演出。

文 | 记者 吴珊
译丨柯妃娟
英文审校丨王枥焓