Trend Lines are often respected during trending market phases, Bullish or Bearish.

Trend lines will respect at Higher Lows (HL) for Bullish Trends going upwards and on the contrary,

Trend lines will respect at Lower Lows (LL) for Bearish Trends going downwards.

3 Taps on a trend line or key level most times signal a strong continuation. Tap, Gap or Overlap.