Yamamoto wasn't paid out.  Nothing was paid.  You simply had a share transfer from Yamamoto to Zhentao, which was marked as share-based compensation (which ultimately flowed to retained earnings).  An equivalent amount was then added to additional paid-in capital such that shareholder equity remained unchanged.  In short, there was just movement from retained earnings to additional paid-in capital (which you can confirm by looking at the Qs at the back-half of 2010 compared to the most recent 10-K).

No income tax is paid because the company is a registered agricultural company.  These companies don't pay tax in China.

@Maj, if you think you know something about YUII that isn't public, please let us know.  I'm long the stock as I believe the stock has been made cheap by those concerned about these accounting number transfers, but I'd hate to be stuck if Geo is going short for reasons that aren't yet obvious to me.