Understandable, but for future reference to anyone who might be interested, telling strangers to "use their brains" is generally not appreciated in many cultures, since it implies that they weren't.

points taken. I updated my original post. sorry for that condescending tone.

Also, as China is surely the least transparent nation among world powers, I think it is unreasonable to expect foreigners outside the curtain to have an understanding of what really goes on behind the curtain. The lack of transparency fuels wild speculation.

I guess you meant "to reason" but wrote it as "to move(use) brain"?