Supply and demand. Bitcoin and gold are regarded as safe-haven assets by investors, which belong to the relationship between supply and demand, because when the financial market is in turmoil, people tend to transfer funds to relatively stable assets to preserve and hedge. Gold has been regarded as one of the safest safe-haven assets since ancient times, while Bitcoin is regarded as a safe-haven asset in the digital age. Therefore, when the global economic situation is unstable or the market fluctuates violently, investors will buy bitcoin and gold at the same time to balance the risk of the portfolio. Bitcoin and gold are related and influential in some aspects, but they also have their own characteristics and market performance. As safe-haven assets, they can work together to spread risks to a certain extent and realize the preservation and appreciation of the portfolio. However, when investors choose to invest in bitcoin and gold, they need to consider their own characteristics and risks and make reasonable decisions according to their own investment goals.