Visitors view pictures at Charming Beijing Photo Exhibition at the main hall of the Union Station of Washington DC, the United States, Sept 6, 2016. The exhibition called Charming Beijing, which will last for four days, was held by the Beijing municipal government to celebrate "China-US Tourism Year" and to introduce Beijing's tourist attractions to local people.[Photo/Xinhua]

Wang expected to see "further breakthrough" in the number of the US tourists in Beijing in the future.

Wang's enthusiasm was shared by her counterpart of Washington DC, Beijing's US sister city since 1984.

"This has been fantastic," said Theresa Belpulsi, vice president of Tourism of Washington DC, talking about Tuesday's event.

"We are very excited these photos are absolutely exquisite. We are very excited again just another event that really highlights the culture and the friendship that we have between Washington DC and Beijing," said Belpulsi.

This year marks the US-China Tourism Year, one of the results of Chinese President Xi Jinping's state visit to the United States last September.

Governments from both sides have launched a series of measures to boost tourism. Now, China is the fourth largest international source of visitors to the United States, while the latter has become the third largest international source of visitors to China.