使用ITextRenderer使用非拉丁字符从HTML生成PDF不起作用

const html = '<p>你好，<strong>世界</strong>！</p>';
const encodedHtml = encodeURIComponent(html);

const renderer = new pdfkit.ITextRenderer({
  font: 'arial',
  fontSize: 14,
  lineHeight: 1.4,
  space: 'auto',
  textAlign: 'left',
  textBaseline: 'top',
  fillColor: [255, 255, 255],
  path: 'M16 4h2a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2V6a2 2 0 0 1 2-2h2zm10 2v10H4V8h10zM6 10h8v8H6V10zm12 6h2v8h-2V16zm2-6v2h-2v-2zM16 20h2v-2h-2zm0 8h2v-2h-2z'
});