When The Chariot [Aries/1st house] and Justice [Libra/7th house] appear together in a spread the following suggestions may help your interpretation.
The Chariot is self-assertion and the personality. Justice is partnership, communal relations, public obligations, business partnerships, sociability, enemies.
Combined The Chariot and Justice suggest the tension between our desire to assert ourselves and our obligations and duties to others. Our right to express our individual character or personality and our duty to maintain peace and harmony with those around us.
The need for autonomy [The Chariot] and the need for intimacy [Justice] are two of our most basic drives and balancing them one of our biggest challenges. See Desire and Intimacy by David Schnarch.