Even though China's annual economic growth slowed down to single digits, Wuhan is still developing rapidly as China pays increasing attention to central and western China's development.

The Wuhan government said the city's GDP has already had a year-on-year growth of 10 percent in the first three quarters of this year.

"What's important for us is the opportunities brought by the development of Central China. San Francisco is definitely catching the wave," he added.

Regional development usually follows a trend from coastal regions to inland, the mayor said. He said he believes that Wuhan will be another Shanghai in the near future.

Nearly 80 universities are located in Wuhan, where 1.2 million college students give the city the world's largest university population.

"I am glad that they have so many universities here. The talent in the city can support many good industries and great innovations, whether it's in the arts, technology, science or healthcare," Lee said.

Wuhan and San Francisco have a great deal in common, and have all the elements to become great cities, he added.

Questions:

1. What American city has Wuhan enhanced ties with?

2. Why is it known as Optics Valley?

3. How many universities are in Wuhan?

Answers:

1. San Francisco.

2. Wuhan has the largest production for optical-electronic products in China.

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