There are several theoretical bases for silver speculation, but there are thousands of technical indicators derived from it. ? Here we list the following bibliographies for the reference of silver investors: 1. K-line theory 1, Japanese candle chart technology (USA) steve nison 2, stock K-line tactics (USA) steve nison 3, candle chart method: from entry to mastery (USA) Stephen W. Vigaro 4, master control strategy K-line (Taiwan Province Province) Li Jincai, Xie Jiaying Amin 2, Dow theory 1. Dow Theory-the cornerstone of market analysis Chen Dongsan, wave theory 1, wave principle (USA) Eliot 2, Eliot's masterpiece collection (including laws of nature) (USA) Robert R. Plechett Jr. 3, Eliot's wave theory-the key to market behavior (USA) Robert R. Plechett Jr. 4, Eliot's wave principle 30 Lecture Hou Benhui. The Application and Trading Strategy of Fibonacci Odd Numbers Robert Fisher IV, Gann Theory 1, Gann Theory's Forty-five Years on Wall Street (USA) 2, Gann Theory-Financial Trend Analysis (Hong Kong) Huang Bozhong 3, Gann Investment Practical Technology Hou Benhui, Guo 4, Gann Angle Line and Time Window Hou Benhui, Guo 5, Gann Investment Geometry Principle Hou Benhui 5 Securities. Kloc-0/ Century Chaos Profit Method (USA) Bill Williams 3. Chaos and Order of Capital Market (USA) Edgar E Peters 4. Fractal Market Analysis —— Applying Chaos Theory to Investment and Economic Theory (USA) Edgar E. Peters?