Short-term retail traders should note that the US dollar index will affect all commodities and currencies, including cryptocurrencies. Especially gold will have a greater impact, gold will move inversely to the US dollar, but $BTC will not follow this rule. Paradoxically, sometimes $BTC will move inversely to the gold price, which shows that $BTC and gold will replace each other for a strong investment shift. When trading cryptocurrencies, in addition to paying attention to the US dollar index, market economy, politics... we should not be subjective in paying attention to the gold price trend in the day and short term.