These are a selection earthenware ceramics with Chinese symbols in calligraphy. This character is Double Happiness.
This is sometimes translated as Double Happy, is a Chinese traditional ornament design, commonly used as a decoration and symbol of marriage.
Typically the character is written in Chinese calligraphy, and frequently appears on traditional decorative items, associated with the lunar new year celebrations. Double happiness symbol also often found all over the wedding ceremony, as well as on gift items given to the bride and groom. The colour of the character is usually red, occasionally black.