Tang Dynasty (AD618-907) is one of most powerful and prosperous dynasties in Chinese history, it is also a great era of cultural development, the prosperity of poems is the most distinctive feature of Tang Dynasty, it is closely associated with the government officials admission examination of the Dynasty as the skill of writing poems is a necessary subject of such examination, so the big poets, such as Li Bai, Du Fu and Bai Juyi, etc, are also government officials, their works reflect their thoughts and feeling on official careers and real life. Due to the economic prosperity, the ordinary...