Background
“May we live long and share the beauty of the moon together, even if we are hundreds of miles apart,” says the romantic Chinese poem. As the round shape symbolizes unity in the Chinese culture, the full moon stirs these ancient sentiments, which are embodied in the way the Mid-Autumn Festival isf celebrated since the early Tang dynasty (618 – 907). In the past, on the fifteenth day of the eighth lunar month every year, families would get together to make offerings of osmanthus-flavoured wine, spherical fruits such as pears, grapes, pomegranates and of course mooncakes to the heavens, to express gratitude for a bumper harvest as well as enjoy a reunion with relatives who live far away. To many, this is considered to be one of the most important festivals of the year. Highly-urbanised Hong Kong still celebrates this holiday, and does so in style and with its characteristic penchant for fusing tradition with innovation.
Source: http://www.discoverhongkong.com/eng/see-do/events-festivals/chinese-festivals/mid-autumn-festival.jsp#ixzz3KMncmjED