The first one.

This is the first one. I will introduce my city, beautiful Chengdu.

Ok, there are some backgroud from wikipedia: (Of course, I will take you into the true live of this lovely city)

http://en.wikipedia.org/wiki/Chengdu

Chengdu (help·info) (Chinese: 成都; pinyin: Chéngdū; Wade-Giles:
Ch'eng-tu), located in southwest People's
Republic of China, is the capital of Sichuan province and a sub-provincial city.
Chengdu is also one of the most important economic centers and transportation
and communication hubs in Southwestern China.
According to the 2007 Public Appraisal for Best Chinese Cities for
Investment, Chengdu was chosen as one of the top ten cities to invest in, out of
a total of 280 urban centers.[1]
More than
four thousand years ago, the prehistorical Bronze Age culture of Jinsha (Chinese: 金沙; pinyin: Jīnshā)
established itself in this region. The fertile Chengdu Plain, on which
Chengdu is located, is called Tianfuzhi guo (simplified
Chinese: 天府之国; pinyin: Tiānfǔzhi Guó) in
Chinese, which literally means "the country of heaven", or more often seen
translated as "the Land of Abundance". It was recently named China's 4th-most
livable city by China Daily.[2]