How do I get to Mt. Huashan from Xian?

You can get there either by train or by bus.
By Bullt train: you will depart from XA North railway station and arrive at HS North Railway Station. There are 13 departures per day and the earliest one is at 07:53. Ticket fare is CNY89.5 for a first class seat and CNY 54.5 for a second class seat. Duration is about half an hour. Upon arrival, take bus no.1 or 2 to scenic site.
By ordinary train: you will depart from XA railway station and get off at HS railway station. There are 24 departures per day and the earliest one is at 08:48. duration is about 1.5 hours. Ticket fare is CNY65.5 for a hard sleeper, and CNY19.5 for a hard seat. Upon arrival, take bus 608 to the mountain entrance.
By bus: you can go to east square of XA railway station to take the bus departing at 08:00 to get there. Bus fare is CNY22 and duration is about 3 hours.
Or go to XA East Coach station to take a bus to get there. The bus departs from 07:00 to 19:15 every 15 minutes. Ticket fare is CNY35 and duration is about 2 hours.