I'm confused. We are living in Beijing and all has been going smoothly in our DCF. After sending in, as requested, our DS-230 (we'll prepare and extra DS-260 just in case), with a passport copy and 2 photos, we received a notice to make appointment for my Chinese wife in Guangzhou. We have collected our documents and will shortly have her medical packet. We assume my wife should bring in person all these documents, including my I-864 and tax forms, my wife's police documents, etc. Also I assume she pays on the interview day. Yet some posters to this site imply we must pay first via Citic Bank and send documents ahead, which we were never notified to do. Anyone know which is correct?