Bitcoin halving is a critical event that reduces mining rewards by 50% every four years, controlling new Bitcoin supply and increasing scarcity. Since 2012, four halving events have historically driven significant price appreciation, with gains of 9,520%, 3,402%, and 652% in following years. The most recent halving occurred on April 20, 2024, reducing block rewards from 6.25 to 3.125 BTC, while the next halving is expected around April 2028. This comprehensive guide explains halving mechanics, historical patterns, miner profitability impacts, and investment strategies for cryptocurrency investors. Understanding Bitcoin's programmed monetary policy and supply dynamics is essential for navigating the crypto market on platforms like Gate and making informed investment decisions based on scarcity principles.