Beihai Park in central Beijing holds some 580 trees aged hundreds of years. These silent veterans have come to a delicate age and require exquisite care. A team of special "babysitters" has been formed to take care of the old trees in the same way parents look after a baby. We dive deep into their stories.

(Video filmed by Hui Jie, edited by Zhang Hao)

(Top image: VCG)

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