神20乘组讲述：返回地球前一天发现舷窗上有一个三角形，像是粘了片小树叶，用40倍显微镜才看清楚是裂纹

Group 1 - The Shenzhou-20 crew was scheduled to return to Earth on November 5, 2025, but an anomaly was discovered during the final inspection of the return capsule [1] - The anomaly was initially perceived by astronaut Chen Dong as a small leaf stuck to the window, which was later recognized as impossible in space [3] - The crew included Chen Dong, who was on his third flight, and Chen Zhongrui, a first-time astronaut, who was preparing items for return [5] Group 2 - Astronaut Wang Jie, a space flight engineer, noted that the appearance of the anomaly changed from different angles, making it difficult to determine its nature [7] - Wang Jie expressed confidence in the safety of the crew, stating that the window had multiple protective layers and that the ground team would analyze the situation thoroughly [9] - The crew utilized various devices available in the space station to document the anomaly, ultimately using a 40x microscope to identify it as small cracks on the window [11] Group 3 - Chen Dong, as the commander of the Shenzhou-20 mission, promptly reported the unexpected situation to the ground control [13]