In 2018, when I rushed into the cryptocurrency world with 50,000 savings, I didn’t even understand the relationship between blockchain and Bitcoin. Ten years have passed, and the tens of millions in my account are the result of three liquidations, countless sleepless nights of technical accumulation, and the iron rules ingrained in my bones. The technical system is the sharp blade honed over a decade. Initially relying on candlestick patterns to guess price movements, I began building my own analytical framework in 2019: using Python to scrape on-chain data and track the flow of funds in exchange wallet addresses. When the transaction frequency of a certain cryptocurrency suddenly increases by more than three times, it is placed on the key observation list; combining wave theory and Fibonacci retracement levels, I enter positions at the 38.2% retracement level of an upward wave and exit at the 61.8% rebound level of a downward wave. During the bull market in 2021, this set of techniques allowed me to accurately capture Ethereum's main upward wave from 2,000 to 4,000 USD; in last year’s bear market, I also relied on on-chain data to detect the bottoming signal of Bitcoin at 18,000 USD in advance, and after buying the dip, I achieved a 50% profit. Over the past decade, the technical system has evolved from simple indicator overlays to the current three-dimensional model that integrates public sentiment analysis, on-chain data, and technical patterns, with each iteration stepping on the lessons of the market. Iron rules are the amulet that crosses cycles. Over the past decade, I have added countless annotations to the iron rules: at any time, the position in mainstream cryptocurrencies should not be less than 60%. In 2018, when altcoins collectively collapsed, this rule helped me preserve my capital; after three consecutive trading losses, I enforced a one-week trading halt. During the market turmoil caused by the COVID-19 pandemic in 2020, this tactic helped me avoid greater losses due to emotional trading; I never set my profit target at an annualized rate of over 100%. I have seen too many people lose everything overnight due to greed and leverage. My annualized return stabilizes at 30%-50%, and over ten years, compound interest has yielded astonishing figures. Having witnessed too many myths rise and fall in the cryptocurrency world over the past seven years, the reason I can earn so much is merely by using technology to see the market's pulse and using iron rules to combat human weaknesses, surviving and moving forward through each cycle. The market is always changing, but solid technology and unchanging iron rules are the confidence to navigate through bulls and bears!