The celebration of the beginning of the 15th century of the Solar Hijri calendar had great significance for Iran, as it was the first year that the celebration of Nowruz was registered as a World Heritage by UNESCO. The Ministry of Foreign Affairs considers the Nowruz celebration as an important occasion for the Foreign Minister to meet with ambassadors and diplomats, but in the year 1400, it was both the centennial of Nowruz and the last gathering of the government. Therefore, they entrusted their most important and unique project to Amir Reza Salari, who presented the Nowruz video mapping as a showcase of Iranian art to foreign guests through video conferencing, with the presence of six ministers and 160 diplomats. This work was designed based on the rituals, music, haft-sin table, and various arts of 12 countries in the UNESCO Nowruz region, as well as various arts such as carpet weaving, painting, calligraphy, poetry, and ancient pottery designs, and was implemented based on the structure of Mashq Square and Qazakhaneh Mansion. This work was not only widely welcomed by the people and global media but also received positive feedback from the ambassadors of the countries participating in the UNESCO Nowruz celebration This magnificent and innovative artwork has successfully brought a new form to this valuable concept, conveying it to the audience through a universal language of colors and music. Produced and executed by the cultural institution of ”Day Sun” which is the leading content producer and provider of 3D projection mapping in Iran, this project stands out for its continuity, storytelling, artistic and scientific knowledge, and precise engineering execution. Amirreza Salari, the first academic and scientific producer of video mapping art in Iran, has been working with ”Day Sun” for over 10 years and is the recipient of the UNESCO honorary diploma, as well as recognition from the United Nations and Iran Mall. Please kindly review and edit the translation as needed