bj.svg 502 Bytes
<svg xmlns="http://www.w3.org/2000/svg" id="flag-icon-css-bj" viewBox="0 0 640 480">
  <defs>
    <clipPath id="bj-a">
      <path fill="gray" d="M67.6-154h666v666h-666z"/>
    </clipPath>
  </defs>
  <g clip-path="url(#bj-a)" transform="matrix(.961 0 0 .7207 -65 111)">
    <g fill-rule="evenodd" stroke-width="1pt">
      <path fill="#319400" d="M0-154h333v666H0z"/>
      <path fill="#ffd600" d="M333-154h666v333H333z"/>
      <path fill="#de2110" d="M333 179h666v333H333z"/>
    </g>
  </g>
</svg>