Weather in March 2016 for Xiling Snow Mountain

I like to find out whether it is recommended to visit Xiling Snow Mountain in mid March for snow playing, snowboard skating? we have tour agency offering departure date on 11th March to go CD where Xiling Snow Mountain is one of the highlights. According to schedule , the tour will bring us to Xiling Snow Mountain on 13th March. As your website suggested to go from Nov - Mid February, I wonder why the tour agent is promoting to visit on March? any changes to the weather?

SS from KL, Malaysia