Regular Expression Validator for both English and Chinese in ASP.Net

Hello,

Earlier my text box was running on this Validation Expression="^[a-zA-Z'.\s-]{1,80}$", to allow only alphabets,  ' . \s . Now my text box should be capable of taking Chinese characters as well, so I was learnt online to use this \p{L} for unicode instead of  a-zA-Z, and set EnableClientScript="false".

asp:RegularExpressionValidator ID="regexpName" runat="server" CssClass="failureNotification"  ErrorMessage="No Special Characters allowed"    
ControlToValidate="txtName" ValidationExpression="^[\p{L}'.\s-]{1,80}$" Display="Dynamic" meta:resourcekey="regexpNameResource1"  EnableClientScript="false"

I have done both, but it doesn't work. My input values were like

1. John123 2. 汉语%^&

Both of these were accepted without any errors. But I expect only alphabets in english and chinese and ' . \s - to be accepted as Name input. Can anyone suggest me correct way to handle this? Thanks,