My 15-year-old son will be visiting his aunts & uncles in Wuhan beginning in late June. He has gotten heavily into video editing and wants to film exotic places when he visits Wuhan, Shanghai and Nanchang during the 5 weeks he and his sister will be in China. Besides obvious sites like military sites, are there any sites or anything else that he should avoid so he won't get in trouble and his film won't be confiscated?