Semalle's photographs are the first comprehensive record of surviving wooden architecture in Yuanmingyuan. Unfortunately, all of these constructions were believed to have been destroyed in war around 1900, when the Eight-Nation Alliance Force attacked Beijing.
Other key figures from the 19th century contributing to these precious photographic records include Lai Afong, a Hong Kong-based photographer, Ernst Ohlmer from Germany, Osvald Siren, a Swedish scholar, and Thomas Child, a British man who lived in Beijing for 20 years.
Thanks to them, people can now get a glimpse of how Xiyang Lou (Western Mansions)-a combination of the Western Baroque style and traditional Chinese architecture, and an iconic symbol of today's Yuanmingyuan ruins-looked in the 19th century.
It appears that some of the structures disappeared later than people originally thought. A recently released photo from the 1920s shows an exquisite statue of Manjusri Bodhisattva, a Buddhist deity, at Zhengjue Temple, a rare example of a well-preserved structure in Yuanmingyuan. However, this statue was gone by the early 1930s.