| CUSIP No. 98158R104 | 13D | Page 8 of 8 Pages |
EXHIBIT 1
AGREEMENT OF JOINT FILING
Pursuant to Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned persons hereby agree to file with the Securities and Exchange Commission, the Statement on Schedule 13D (the “Statement”) to which this Agreement is attached as an exhibit, and agree that such Statement, as so filed, is filed on behalf of each of them.
IN WITNESS WHEREOF, the undersigned have executed this Agreement.
Dated: May 27, 2011 | | |
| | /s/ Jimmy Wang | |
| | Jimmy Wang | |
Dated: May 27, 2011 | | |
| | /s/ Mindy Wang | |
| | Mindy Wang | |
