Prediction of stock with Gao's equation is a unique book to discuss how to apply a new method of dynamic balance of moving average to predict stock price with a mathematical equation. A full size stock ruler sample, a worksheet, and an instruction of how to use the stock ruler are included. The idea of Feng Shui and Ba Gua to evaluate 9 grades of stock strength is applied that can simplify the method of prediction of stock price of tomorrow with the sliding stock ruler. Some arts, peoms, and abstract of a tale are inserted. This is an economic (black and white printing) version of the book to reduce the cost. The original version is printed in full color. Readers who are interested in a full color copy with color stock ruler and worksheet may find it under the same author at Lulu.com.