Without a goodbye

Imperial Multi-Speciality Hospital, 06:30;

"What were you even doing with his phone?!", Xi Fang questioned his mother as he passed the device to Xi Yuan. 

"In a hu...hurry, he forgot to bring it along with him.", the woman explained, "So I picked it up before coming with your father."

Xi Yuan, though discontented by the privacy intrusion, unlocked his phone, and as soon as he did, a series of notifications popped up on the screen. Among them were 43 messages, and 29 calls, from just one person. From her. His Xinghe. And exactly twelve minutes ago, was the last one. An audio message, it was, just as her brother had informed him. 

The man then directly opened the call logs and dialed her number, hoping that she'd pick it up. It was switched off, of course. She must've removed the sim card before leaving. She always did. She'd left. For a who-knew-how-dangerous Military mission. And that too, without a goodbye.