He said that the alliance was formed on Friday based on a proposal by the Chinese government.
The official added that 57 cities from 26 different countries are members to the alliance and more cities can also be added as new members.
He said that the presence of Semnan in the alliance provides Iran with a chance to offer its tourism capacities with the focus on the Silk Road and Semnan and to present its future plans for hosting a meeting of mayors of member cities.
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