When planets are conjunct our rising sign, we tend to be “marked” by the energies of the planet that is affecting our Ascendant.
In order to get to know ourselves better and deeper, understand why we are the way we are, and why we sometimes react (in an extreme measure) the way we do - we turn to the planet(s) that conjuncts our rising sign.
Planets in our 1st house (especially those that conjunct the top of our AC) are the ones whose faces we show the most to the outside world. This is where we might find an answer to our behavioural patterns and subconscious programs.