I met my wife in Nanjing, China while I worked there from 2006-08. I proposed to her on the Great Wall in September 2007, petitioned her for a K-1 visa, and we came to the U.S. (Vermont) together in September 2008. I-130 and I-485 approved after marriage, I-751 approved 2 years later, and now she is a US citizen.
