This paper develops a quantitative investment method suitable for both the U.S. and Taiwan markets. Although simple, this method also signifies a low barrier to entry, aiming to reduce investment risk and time cost while achieving returns that exceed market indices. The study is based on investment methods previously researched, including but not limited to dynamic asset allocation strategies based on value and momentum factors, and proposes an improved version of the momentum-based dynamic allocation method. Through empirical analysis, the strategy's performance in both the U.S. and Taiwan markets is examined, proving its long-term superiority over the market, especially in effectively controlling risks during bear markets. Finally, the paper discusses how to use simple market indicators to improve the recovery rate of the momentum allocation strategy following significant market downturns.