C639 Border Border

The sun was high in the sky, and there was still a slight chill in the vast desert. Fortunately, the wind and sand were not strong, so it was not difficult to set foot on the journey. On the yellow sand, one could vaguely distinguish two lines of footprints that were spreading forward, but one could not see who had left them.

The existence of the footprints was not yet covered by the sandstorm