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.
Chinese surnames are used by Han Chinese and Sinicized ethnic groups in Mainland China, Hong Kong, Macau, Taiwan, Korea, Singapore, Vietnam and among overseas Chinese communities.In ancient times two types of surnames, clan names (Chinese: å§; pinyin: xing) xÃ¬ng and lineage (Names: chinese; æ°: pinyin), shi. shÃ¬ existedhinese surnames are used by Han Chinese and Sinicized ethnic groups in Mainland China, Hong Kong, Macau, Taiwan, Korea, Singapore, Vietnam and among overseas Chinese communities.