Even neighborhood news can be distorted: In August, a false post that said a beloved Chinatown bakery was closing caused a crowd to descend on the storefront.
Ms. Tsui’s son, Justin Tsui, 37, even walked to the Manhattan bakery to prove to her that the post was wrong.
It has also drawn the ire of President Trump, who is trying to prohibit it.
On Friday, the legal fight over WeChat’s future in the United States intensified when the Trump administration appealed a federal judge’s ruling that had halted the federal government’s ban on the app.
The administration has argued that WeChat endangers national security by collecting data from American users that could be retrieved by China’s Communist government.