Entrance to the Forbidden City, once home to emperors, is no longer forbidden. But, unofficially, there are “forbidden topics” that you should avoid discussing in China.

Some symbols, such as dragons, have different connotations in China. One U.S. company caused an incident with a commercial that showed an American athlete slaying a dragon, which is a symbol of China’s greatness.

Send us your questions about China, and see if you can answer the China questions that we post. Question: In China, what is the proper way to hand your business card to someone you meet? Contact us for the answer — one of our many practical tips about doing business in China.