C384 Margin of Death

Yan Yiqing covered her nose and mouth as she thought absentmindedly for a few seconds. Then she started to dig into the hole with her hand — a wall that was only a few centimeters thick. It was so hard to pass through now, but Yan Yiqing felt that after digging for several hours, her fingers started to bleed, but she still didn't feel any fresh air.

His reason slowly dispersed