（文本為視頻大致內(nèi)容，可能與視頻并非完全一致，歡迎大家貢獻(xiàn)聽寫稿^^）

There is a thousand-year old ancient city sleeping under Qiandao Lake. In 1959, lion city slipped from view under the rising waters of the Xi'an jingo reservoir. But Now the Chun'an county government has organized an expedition to explore the now-sunken city.

The ancient city can be found occupying nearly half a square kilometer 30 meters below the surface of Qiandao Lake.

Broadcasting at that depth is no simple task. The camera crew had to go for special training at a Qingdao marine school. They are trying to tackle an unprecedented challenge after all.

Kang Rui, Director of Underwater Broadcasting Team, said,
"This will probably be a record challenge for underwater broadcasting. As far as I know the deepest live broadcast took place 29 meters below water. The old city under Qiandao Lake is at least 30 meters below the surface, with a maximum depth of over 40 meters. So you can imagine the pressure for us. Another challenge is in the cold water. The temperature only reaches 8 degrees Celsius at the bottom of Qiandao Lake."

It's no surprise that they're being careful to plan for the unexpected.

Yang Huamin, Political Commissar of Qingdao Naval Sumarine Institute, said, "Potential snags include nets dropped by fishermen and broken walls from underwater houses among others. These could pose a great challenge for underwater broadcasting. But we are confident that we are fully prepared."

Planning for the expedition has been underway for ten years. In 2002, Chun'an County invited experts from the State Marine Institute to compile a sonar map of the underwater city. Last year the local government set up an ancient city museum based on the map. And this time, everyone is anticipating even more.
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