The exhibitions have also made their way to local schools.

And Qu Changgen, a professor from Zhejiang Sci-Tech University's School of Marxism, even took some of his classes at the exhibition sites.

"The Zunyi Conference exhibitions focused on a factual description of the key events, which is more direct and real for students," says Qu.

The Zunyi Conference site is only one among the many popular sites on offer.

The site of the First National Congress of the Communist Party of China in Shanghai received 730,000 visits in the first 11 months of 2017, according to the site's curator Zhang Liming. And during the three-day China red tourism expo hosted in November 2017 in Nanchang, the capital of Jiangxi province, more than 100,000 people visited the area.

In a related development, the National Tourism Administration reports that the number of red tourism spots now expected to receive more than 100,000 people a year, increased to 118 in 2016, from 82 in 2013.

Travelers have paid more than 5 billion visits to red tourism destinations since 2004, an annual growth rate of 16 percent.

And the authorities are expecting the number of such tourists to cross 1.5 billion annually by 2020.