In ProcessNumberingList(HtmlEnumerator en) method,
 
if (en.Current.Equals("<ul>", StringComparison.InvariantCultureIgnoreCase)) should be:
 
1： if (en.Current.StartsWith("<ul", StringComparison.InvariantCultureIgnoreCase)).
 
2： if (en.CurrentTag.Equals("<ul>", StringComparison.InvariantCultureIgnoreCase)).
 
This is why i cannot generate bullet list.
 
Best Regards.