PRC roundel (symbol/emblem) — red star with yellow fimbriation and the "八 8"–"一 1"  PLA emblem inside the star.  (This refers to the date 1 August: the People's Liberation Army was founded on 1 August 1927 during the Nanchang uprising.)  Used also as military vehicles roundel.
Original uploader was <a href="https://zh.wikipedia.org/wiki/User:Nicolau" class="extiw" title="zh:User:Nicolau">Nicolau</a> at <a href="https://zh.wikipedia.org/wiki/" class="extiw" title="zh:">zh.wikipedia</a>
14 March 2006 (original upload date)
Originally from <a href="https://zh.wikipedia.org/wiki/" class="extiw" title="zh:">zh.wikipedia</a>; description page is/was <span style="border:1px dotted #FC0;padding:0 4px"><a href="https://zh.wikipedia.org/wiki/File:China_Emblem_PLA.svg" class="extiw" title="zh:File:China Emblem PLA.svg">China Emblem PLA.svg</a></span>.