WATCH: There’s a Devil Loose: Asian Man in Critical Condition After Being Stabbed 13 Times in Brooklyn Attack

A man is clinging to life after he was stabbed more than a dozen times in a bloody Brooklyn attack, police said.

Li Qianyang, 48, was walking on 8th Avenue around 7:11 p.m. Saturday when an unknown assailant stalked up behind him and stabbed him 13 times in the back, head, arms, and chest before fleeing, police said.

Mobile phone video of the attack shows Quianyang trying to fend off his attacker, can be seen lurching over him and repeatedly stabbing the man as he lays in a pool of his own blood.

One of the thrusts of the knife struck the victim in his heart, a police source said Sunday.

The attacker “was on top of him stabbing him,” a police source told The Post.

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SOURCE: New York Post, Tina Moore and Jorge Fitz-Gibbon