C1539 Confusion

"Vice Commander-in-Chief, please wait." The other party replied.

After a while, he replied, "The deputy commander thought very carefully and accepted the deputy commander's suggestion."

After a while, the middle-aged man's phone rang. He picked it up while driving.

"Mm …" "Mhmm …" He's just, uh. He didn't say anything else.

After answering the phone, he continued to drive.

I sat in the back