Transit visa for Peruvians

Hi,
I am from a Schengen country and I have a ~2h stopover in Chengdu on the way from Switzerland to South Korea, similar time in Beijing on the way back. I don't plan to leave the airports. Question is about my wife who is from Peru (not listed in your 72h-free transit list), but has a valid long-term Schengen visa (Switzerland). Will we have any problems?
Thank you very much in advance
Richard