Big Dipper

The ancients determined the seasons based on the directions pointed by the Big Dipper. Today, we have another Beidou above our heads, spanning the sky above us and becoming our eye in the sky, guarding homeland security and serving society and people's livelihood. It is the Beidou satellite navigation system that is completely independently developed and built by our country. The novel describes its thorny and magnificent construction process and the growth of everyone in this process. Like Beidou, they are shining like stars in the sky.