Pingyao - Beijing - Suzhou by train in october

I'll take in october the rail Pingyao - Beijing n° K610 ( 20:32 - 5:13+1) and the day after Beijing South - Sozhou n° G121 (10:28 - 16:02). If I purchase tichets online, is it possible if I can collect both tichets at Pingyao's railway station ( one day or more before the departure ) ?
thanks