Guojia Tushuguan (National Library) station
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| Location | Zhongguancun South Street Haidian District, Beijing China | ||||||||||||||||||||||||
| Coordinates | 39°56′35″N 116°19′31″E / 39.943114°N 116.32519°E | ||||||||||||||||||||||||
| Operated by | Beijing MTR Corporation Limited (Lines 4 and 16) Beijing Mass Transit Railway Operation Corporation Limited (Line 9) | ||||||||||||||||||||||||
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| Platforms | 6 (3 island platforms) | ||||||||||||||||||||||||
| Tracks | 6 | ||||||||||||||||||||||||
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| Structure type | Underground | ||||||||||||||||||||||||
| Accessible | Yes | ||||||||||||||||||||||||
| History | |||||||||||||||||||||||||
| Opened | September 28, 2009 (Line 4) December 30, 2012 (Line 9) December 31, 2020 (Line 16) | ||||||||||||||||||||||||
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Guojia Tushuguan (National Library) Station, also known as National Library station or Guojia Tushuguan Zhan) is an interchange station on Line 4, Line 9 and Line 16 of the Beijing Subway. Its name is derived from the nearby National Library of China. The station features a double-island interchange layout, with Line 4 trains on the outside and Line 9 trains on the inside, which allows most riders to change lines simply by crossing the platform, instead of walking between levels. This configuration is known as cross-platform interchange. The station handles 106,000 transfers between Lines 4 and 9 per day. The platform for Line 16 is built under the Line 4 and Line 9 platform. If the through service of Fangshan line to Line 9 is counted, which started on January 18, 2023, this would be the first four-line interchange on the Beijing Subway.