From the website The Truth About Knives, which monitors knife crime:
What do you do after cutting off your pregnant wife’s arm and a couple of fingers? Take a trip to Niagara Falls of course. He was actually trying to sneak into Canada, in flagrant disregard for their immigration laws. He tried to sneak across the border in a bus’s luggage compartment, and at the time of his arrest, he was wearing a life jacket.
From FoxNews:
A New York City man who allegedly cut off his pregnant wife’s arm and escaped Brooklyn was arrested near Niagara Falls on Saturday — as police said he may have been plotting to swim to Canada.
Yong Lu, 35, was taken into custody in the One Niagara building around 7:45 p.m., The Buffalo News reported.
Niagara Falls Police tweeted a photo of Lu getting arrested in a food court. The department credited the New York Police Department and the U.S. Marshals Violent Fugitive Task Force for aiding in the arrest.
Can't load tweet https://twitter.com/ChiefNFPD/status/1010952510360707073: Unknown MIME type: text/html
Lu was wanted for allegedly cutting off his wife’s arm and two fingers on her left hand with a steak knife in Sunset Park on Thursday just after noon, according to the New York Post.
Lu’s wife, 31-year-old Yang Li, was inside their home waiting for their 7-year-old son to finish school. Lu reportedly became angry and went on a rampage.
The Truth About Knives sees this a knife crime, which it is. A typical Chinese cleaver, like this one, is a foot long, weighs a pound and can take off not only an arm, but a head. (If a policeman shoots an immigrant armed with one, you'll hear that the deceased was practically unarmed.)

But also an immigrant crime--a crime that wouldn't have happened in America without mass immigration. Are these kinds of stereotypical crimes common among modern Chinese immigrants? Who knows? The press doesn't want us to know.