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Photo taken on Feb. 12, 2018 shows giant panda Xi Le at Tianjin Zoo in Tianjin, north China. The giant panda enclosure was open to the public Monday after a renovation that lasted for over four months. (Xinhua/Shi Songyu)

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Photo taken on Feb. 12, 2018 shows giant panda Xi Le at Tianjin Zoo in Tianjin, north China. The giant panda enclosure was open to the public Monday after a renovation that lasted for over four months. (Xinhua/Shi Songyu)

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Photo taken on Feb. 12, 2018 shows giant panda Xi Le at Tianjin Zoo in Tianjin, north China. The giant panda enclosure was open to the public Monday after a renovation that lasted for over four months. (Xinhua/Shi Songyu)

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Photo taken on Feb. 12, 2018 shows giant panda Xi Le at Tianjin Zoo in Tianjin, north China. The giant panda enclosure was open to the public Monday after a renovation that lasted for over four months. (Xinhua/Shi Songyu)

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Tourists visit giant panda Xi Le at Tianjin Zoo in Tianjin, north China, Feb. 12, 2018. The giant panda enclosure was open to the public Monday after a renovation that lasted for over four months. (Xinhua/Shi Songyu)

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Tourists visit the giant panda enclosure at Tianjin Zoo in Tianjin, north China, Feb. 12, 2018. The giant panda enclosure was open to the public Monday after a renovation that lasted for over four months. (Xinhua/Shi Songyu)