View of the replica of frescoes in the No. 285 grotto of the Mogao Caves during the Dunhuang Art Exhibition at the Shanghai Tower in Shanghai, China, 11 July 2018. Three grottoes at Dunhuang in northwest China have been replicated in the Shanghai's tallest building for an exhibition which opened in April. The full-size facsimiles ª two grottoes from Mogao Caves and one from Yulin Caves ª have been installed in the 632-meter Shanghai Tower. Dating from the 5th to early 11th centuries, they show the typical features of three different periods of the Dunhuang grottoes, the world's largest treasury of Buddhist art, said Mi Qiu, curator of the exhibition. Frescoes in the original caves have been copied using high-definition scanning and printing technologies, Mi said. The exhibition opened to the public on April 28 in the tower's exhibition hall and will run until February next year. It will also feature over 118 precious cultural relics from seven museums in northwest China's Gansu Province, many of them being shown in the city for the first time, including bronze statue "Horse Stepping on Swallow" from the Eastern Han Dynasty (AD 25-220).