Everybody：
        Since June 22,2009 when the Field for AST has been created up to now, I have already completed 289 issues in Chinese and English once weekly to exchange academic views with others. You are welcome to visit my website（www.tuyelt.com）.
        Besides, Theory of Soil, same as Three Series of Literatures of AST (2014 Edition End) was made one disk by me. Chinese or foreign readers, who wants it, please send your address to me, then I will mail a disk to you free, at least 100 CDs every month. You are welcome to contact with me.
        Address：Retirees’Office of the Research Institute of Exploration and Development of Liaohe Oil Field Liaoning Province, P.R.China