technical stop at airport URUMQUI

Heloo;

My name is Bostjan and I am from Slovenia and i have booked flight from Viena to Manila we will be in Guangzhou for 2.15 h for our next flight to Manila and on the way back we are at Guangzhou airport for 1.20 h for next flight to Viena and than we have technical stop at URUMQUI airport for 2 hours. I am very confused about VISA. Can anybody know about that I have checked on the Chinese embasy and they said that I must ask contact URUMQUI airport but useles.

Thank you for all help about that.

Bostjan