On the morning of a wedding in Vietnam, the groom's mother visits the bride's family and offers them two gifts. The first is a special plant, that represents respect, and the second is pink chalk, which is the color of happiness.
On his wedding day, as the groom heads to collect his bride, he picks up friends and family along his way. They arrive at his future wife's house bearing wedding presents of jewelry, clothing and money.
from
http://www.worldweddingtraditions.com