Re: One afternoon in Nuremberg
The handcraft market is called Handwerkerhof, it isn't big but worth a short visit.
Re: Do I need a Visa to visit Beijing, China for 1 week stay?
You can stay up to 144 hours for transit w/o visa. The time starts at midnight after your arrival.
Re: Beijing to Xian Sleeper on 144hr Visa
The 144 hour TWOV in Beijing allows you to stay in Beijing, Tianjin and Hebei province, but that doesn’t include Xi’an.