Chinese serves as one of the six official languages of the United Nations. It is spoken by 1.2 billion people in the world; the total population of Chinese speaker is only second to English. In the last few decades, China’s exchange with the world has been growing rapidly. The demand of Chinese-speaking talents therefore increased to serve various causes.
Chinese encompasses a group of varieties dialects, such as Mandarin, Hakka, Cantonese. The group of Chinese language is an analytic language which relies on word order and particles, instead of inflection or affix, to provide grammatical information of tense or pronoun. After Mandarin has been chosen as standard to be the official language in China, Taiwan and Singapore in early 20 th century; Chinese is commonly referred as Mandarin.