Higher-low, higher-high
In technical analysis, an upward trending asset typically sets higher lows and higher highs.
The way this works is that the price rises, setting a new high (higher-high), then drops as traders take profits, but this drop doesn’t cause the price to fall lower than the previous low (higher low).
Once this new higher-low is set, the buying continues, sending the price back up and setting a new higher-high.
This typically looks like a zig-zag pattern that moves diagonally upwards.