Maybe linked with this

https://bf4db.com/player/1558232543

battlereport

https://battlelog.battlefield.com/bf4/zh/battlereport/show/1/1464538694585354688/1004359847387/

https://battlelog.battlefield.com/bf4/zh/battlereport/show/1/1464523964126172096/1004359847387/

https://bf4db.com/player/1004359847387

https://bf4db.com/forum/thread/forum-reports-are-now-closed-8340

At the moment he is under investigation, you can add your suspicions to his profile.