The New Administrative Capital (NAC) is a planned city located east of Cairo, which was inaugurated in 2019 as part of Egypt's plan to boost economic growth and alleviate congestion in Cairo. The city is being developed by the New Urban Communities Authority (NUCA), a government agency responsible for the planning and construction of new urban areas in Egypt.

There are several ongoing construction projects in the NAC, including residential, commercial, and administrative buildings. The Tiffany Business Park Mall is one of the commercial projects in the NAC, and it is being developed by the Talaat Mostafa Group (TMG), one of Egypt's leading real estate developers.

According to media reports, the Tiffany Business Park Mall is a 70,000-square-meter project that will feature retail stores, restaurants, cafes, and entertainment facilities. The project is expected to be completed in 2022, but I do not have any information on the progress of the pillars' construction specifically.

Overall, the NAC is a significant development project for Egypt, and the government is investing heavily in infrastructure and amenities to make it an attractive destination for residents and businesses. However, like any major construction project, there may be delays or changes to the timeline due to various factors such as weather, labor shortages, or other unforeseen circumstances.