Phones Xiaomi Mi3, octore-core, 16Gb Ram, 150Gb HD.. Could it be possible ?

Fan specs...

"One Xiaomi fan has taken it upon themselves to work out just what the Mi3 will look like and even suggest the hardware which can be built-in while keeping prices down to the magical 1999 Yuan mark."

That immediately precedes the paragraph you posted.

To answer your question; possible? Yes. Probable? No.

150gb of internal storage? Makes you wonder how they got that number.
128gb, 144gb, 160gb all make sense, but not 150gb.

150gb and 16gb ram that's unbelievable. I wonder if the battery capacity is 10000mAh then.

Yeah, I doubt it.

Just a delusional fan fantasy. The real Mi3 materialized nothing like that. Not even sure if those specs could be built into a device of those dimensions at this point in time.

If this is a stupid cortex a7 octocore than its a waste of time. Give us faster cores not more.

Even if this was real it means NOTHING if it's not accompanied by good software, and by that I mean optimization, latest 4.4 android, at least two big updates and no lag.