University of Bristol - Historical Photographs of China reference number: DC-s09. A hand coloured photograph by T.F. Crellin. Thomas Frank Crellin (1883-1949) was a photographer and cinematographer. He was based in Shanghai from c.1923 to 1927, working for Eastman Kodak. This ancient arch (Yuntai or The Cloud Platform (云台) is also known as the Language Archway or Gate of Six Languages (Sanskrit, Tibetan, Phags-pa, old Uyghur, Chinese, Tangut). The gateway is at Nankou (Nankow) Pass (Harmony or Juyong Pass) (now Juyongguan 居庸). The Cloud Platform is a way through a branch of the Great Wall (长城), about 40 miles north of Peking (Beijing). See also Bk04-14, Bk04-54, NA01-86 and OH-s02.