每日钉一下（为啥市场一定会在熊市牛市之间来回切换？）

Group 1 - The article discusses the cyclical nature of the stock market, highlighting that it oscillates between bull and bear markets due to economic cycles [7][11] - Three main cycles affecting the stock market are identified: fundamental cycle, liquidity cycle, and sentiment cycle [7][11] - The fundamental cycle refers to the growth rate of corporate earnings, which has been slow from 2022 to 2024, with a potential recovery in 2025 for certain sectors like technology and military [8][11] Group 2 - The liquidity cycle is influenced by the availability of capital, particularly affected by interest rate changes, with a significant rise in A-shares and Hong Kong stocks following the Federal Reserve's rate cuts in September 2024 [9] - The sentiment cycle reflects investor emotions, where optimism peaks during market rises and pessimism during declines, impacting investment decisions [10][11] - The interplay of these cycles can lead to simultaneous peaks or troughs, resulting in pronounced bull or bear markets [11]