Can I store luggage at the Longmen Grottoes ? Is there a bus from grottoes to Luoyang high speed Train station

Yes, you can store your luggage at the Tourist Service Center of the grottoes.

Local bus no. 67 or 71 can directly take you to the high speed train! I remember the bus duration is around 50min. Bus no. 67 operates from 07:00 to 19:35 and bus no. 71 operates from 07:00 to 19:45. I heard the interval is 10-15min for both of them. The bus fare is CNY1 per person.