Translation of cryptography in Spanish

Can we meet on the March 4 or 5 (Tuesday or Wednesday) in Cologne? I am delighted to see you again soon. We are in the beginning of March and we look forward to seeing you next week. Here's a photo.
Can you speak English or Chinese? It would be easier to learn. I will correct you and you will help me, OK? From where in China are you? I know only Beijing and Shanghai, oh yes, and Hong Kong.
I'd be very happy if we could write me. I have read your blog. Are you from the U.S.? Where exactly are you from, which state? I have visited Chicago last year because my grandma lives there.