There is a phase when the early embryo consists only of simple epithelial layers. Later, the three primitive germ layers give rise to 4 primary tissues: 1. Epithelium  the cells are generally applied closely one to another with little cementing substance.
See also: Confucius and Gong (surname) Kong (å­, /ËkoÊÅ/) is a Chinese and Korean surname. It can also be written as Kung in Taiwan, Hung in Hong Kong, Khá»ng in Vietnam, and Gong in Korea. There are around 2.1 million people with this surname in China in 2002, representing 0.23% of the population.
The full official name, after 1997, is Hong Kong Special Administrative Region of the People's Republic of China. This is the official title as mentioned in the Hong Kong Basic Law and the Hong Kong Government's website; however, Hong Kong Special Administrative Region and Hong Kong are widely accepted.ong Kong is known for its skyline and deep natural harbour. It has an area of 1104 km 2 and shares its northern border with the Guangdong Province of Mainland China. With around 7.2 million Hongkongers of various nationalities, Hong Kong is one of the world's most densely populated metropolises.