Yúnnán de sēnlín lǐ hái néng tīngdào hēiguānchángbìyuán de jiào shēng.
You can still hear the call of black crested gibbons in the forests of Yunnan.
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One of the world's most endangered primates — the eastern subspecies (东黑冠长臂猿, Cao Vit gibbon) numbers only around 100 individuals along the China-Vietnam border. Males are jet-black with a tall crest of head fur; females are golden-yellow.