With the sound of stringed instruments, drumbeats and the melody of folk singers, Afghanistan celebrated its National Pavilion Day -- on its 91st Independence Day -- at the World Expo Thursday.

Afghan Commerce and Trade Minister Anwar-ul-Haq Ahady spoke at the ceremony, saying that as Afghanistan had experienced conflict and suffered various security, economic and social problems, the country viewed being at the World Expo as a great achievement.

It was the first time that the land-locked and often worn-torn country has participated in the World Expo. Ahady said it was exciting to see the Afghan flag flying with more than 200 other national flags above the Expo Garden.

Ahady said the Afghanistan Pavilion, with the theme "Heart of Asia, Land of Opportunities & Resources," received about 50,000 visitors daily.

The pavilion is a reconstruction of the famous Blue Mosque of Herat in northwestern Afghanistan. It displays nomad tents, antique rugs and textiles, traditional silver jewellery and corals, and also has a bazaar selling handicrafts.

Ahady said his country's participation in the Expo aimed to promote Afghan culture and boost trade between Afghanistan and China. He encouraged Chinese businessmen to invest in the country, as "the return of investing in Afghanistan is very high."

Afghanistan established diplomatic ties with China 55 years ago. The country won independence from Britain in 1919.