Cloud Nine, Skyscraper in Changning District, Shanghai, China.

Cloud Nine, also known as Longemont, is a 60-floor, 238-meter skyscraper in Changning District, Shanghai. Its lower levels hold a shopping mall with retailers such as Uniqlo, C&A and Zara, while the upper body contains offices and the Renaissance Shanghai Zhongshan Park Hotel. At night, floodlights attached to the exterior walls illuminate the tower.

The mall opened on 18 December 2005, and the tower was completed in 2006. In December 2007, Changfeng Real Estate sold a 50% stake to CapitaLand Retail. The complex was renamed Longemont Shopping Park on 28 April 2017 and Longemont City Life Center on 3 December 2022.

The Chinese name of the building, Long Zhi Meng, translates as Dragon's Dream, drawing on a symbol deeply rooted in Chinese tradition. This name appears on signage throughout the complex, giving the tower a local identity that contrasts with its glass and steel exterior.

The building connects directly to Zhongshan Park Metro Station, served by lines 2, 3, and 4, so arriving by public transport is straightforward. Once inside, different entrances on the ground floor lead to the shopping area, the offices, and the hotel separately.

The Renaissance Hotel inside the tower operates independently from the shopping levels, so guests can sleep, work, and shop without leaving the building. This kind of fully contained mix of uses is not common in this part of Shanghai.