Four iron rules of the bull market for Bitcoin, with no exceptions to date:

1. Halving occurs once every four years

2. A major bull market starts six months after the halving

3. The bull market ends one and a half years after the halving, followed by a crash — the best time to take profits

4. The crash lasts for 1 year, hitting the bottom with an 80% drop — the best time to buy the dip

When the Bitcoin bull market rises significantly, funds will naturally flow to altcoins. When the trading volume of altcoins increases, they will rise (unless Bitcoin hasn't entered a bull market).