GB2312汉字
CODE:
[/xb0-/xf7][/xa0-/xfe]

GB2312半角标点符号及特殊符号
CODE:
/xa1[/xa2-/xfe]

一个不幸的消息，  貌似SAS的正则表达式不能很好的支持中文等双字节字符，还是用 perl 吧

If you use the regular-expression-id argument, you cannot process DBCS and MBCS data because the argument requires the PRXPARSE function, which is not DBCS compatible.

https://go.documentation.sas.com/?docsetId=lefunctionsref&docsetTarget=n0bj9p4401w3n9n1gmv6tf*****9m.htm&docsetVersion=3.1&locale=en