Never say or act like you are starving and don t ask for a doggy bag. Most Chinese women don't wear wedding rings. Don't assume marital status. Especially for Women China is a difficult place for anyone to conduct business. A woman may gain acceptance, but it will take time and will not be easy.
China is a male-dominated society.
However, there are many women in business in China and some occupy high-ranking positions and important managerial jobs. One of the principles of the Chinese communist system is to work toward sexual equality. Negotiating teams may have women members. Women may be used to decline unpopular proposals. Businesswomen attend business dinners, but rarely bring their spouses.