However, often a nod of the head or a slight bow will suffice. If your Chinese host does not smile upon introductions, don't worry. The Chinese culture is rooted in the attitude of keeping one's feelings inside rather than displaying emotions openly and publicly. The Chinese generally are not a touching society, especially with visitors. Thus, avoid any prolonged bodily contact.
Personal space is very limited in China, especially while conversing.
The Chinese love to applaud, thus don't be surprised if you are greeted by a round of applause, even by children. If you are applauded, be respectful and return the applause. It is common in China to show one's surprise or dismay by sucking air in quickly and loudly through the lips and teeth. Silence is respected in China, so don't be discouraged if there are long periods of no talking. This time can be used for contemplation by your hosts.