Most likely radio interference, but maybe not. Fun to think about.
Actually, it looks like it’s already been discounted.
We get aliens for cheap?
Fiddle.
Sino-Propaganda.
Pay it no heed.
Yes, but they’re cheaply made.
‘Made in China’ …?
That’s how I took it.
Here’s a current article about China’s FAST telescope. They may not have discovered aliens yet, but the scope is finding interesting stuff.
From a comment I saw eslewhere …
Short answer: No.
Long answer: No, they didn’t.
Not to be outdone by China, a Taiwanese researcher found an elephant on Mars. 
The Latin for that is “fuckin’ rock”.