No news as to today's big drop. Similar large drop a while ago with a partial recovery later. Concerns include: overall delay in getting deal done since announced in February; delays in issuing a final proxy & vote date; delays in filing financial statements; very little communication from management in recent months. As a management buyout, there is no 3rd party motivated to keep progress on track. Add the usual risks seen in Chinese stocks. Yahoo finance was showing Sept 23rd to be an earnings reporting date, not sure what that based upon.