C39 Construction of Changbai Base Area(4)

"I thought of that a long time ago, Commander Cao!"

Looking at Cao Yafan's earnest eyes, Ding Chengsheng confidently smiled and said, "This time, I have prepared a batch of military training courses and military teaching films, which are first-hand information from the different military empires today!"

"Really? That's great! "

Upon hearing this news, Cao Yafan became extremely excited, losing