Bullish divergence is a term used in cryptocurrency trading that describes a sharp rise in the price of an asset after a prolonged period of decline. Basically, this term refers to Bitcoin and other major cryptocurrencies that have high liquidity and widespread popularity.

The idea is that after a long period in which the price of an asset has fallen, many investors begin to abandon their positions and sell their cryptocurrency assets. This causes the price to decline further and many other investors begin to panic and sell their assets as well.

However, when the number of sellers reaches its peak, new investors appear and begin to buy assets at low prices. This can become a catalyst for a rapid change in market sentiment when the asset price begins to rise sharply. This rise in price caused by the restoration of investor confidence is called bullish divergence.

It is important to note that bullish divergence is not a guarantee that the price of an asset will continue to rise. You should also be careful not to rely on such price changes because they can be unpredictable and unexpected. The cryptocurrency market is known for its high volatility and risk, so you need to be prepared for possible losses.