Take the high-speed train to Jinan, get off at Jinan Station, and transfer to the subway 1 line at Jinan Station to Jinan East Station. You can also transfer to other public transportation (such as taxis and buses) at Jinan Station to go to Jinan East Station.
For specific information such as travel time and fare, please go to the 12306 website or the local railway passenger station for consultation and confirmation.