Have CHINA EASTERN economy ticket. Will fly domestic from Beijing Capital Airport.

Hey. In this airport, T1, T2, and T3 are all facilitated with lounges. They accept CNY cash, credit cards including China Union, Visa Card as well as Master Card. So your Star Alliance Gold Card and Diners Club Card may not accessible. Or you can consult the airport lounge hotline to ask for this. The hotline is: 86 010 64540985.