Can I go to emei shan directly from Chongqing. Does the long distance bus has this route?

You can take long-distance bus at CQ Bus Station, get to Emei City Bus Station first. The shedule is at 09:00 and 11:00. And the ticket fare is CNY 126 per person.
After arriving, there are tourist buses that can take you to the scenic area directly. Or you can take a taxi to get to.