Mercury opposite Pluto (orb 6.8°) is minor in this chart. The orb is wide; this aspect stays a light nuance.
Here, Mercury in Sagittarius in House 4 brings intellect, language, thought, and technique into House 4 (roots, privacy, and inner foundation), with Sagittarius style (expansion, travel, belief, and the search for meaning); Pluto in Taurus in House 9 brings crisis, power, survival, and regeneration into House 9 (vision, belief, study, and wider horizons), with Taurus style (nature, good food, physical sensuality, roots, resources, and perseverance).
Concrete conflict: this aspect sets intellect opposite Pluto: speech, analysis, or information can conflict with secrecy, power, crisis, or control. Visible angle: Mercury near the IC (orb 5.1°) and Pluto near the Midheaven (orb 1.7°) touch angles; this aspect is easier to notice through private base, family roots, and intimate psychological climate; also through social role, reputation, career, and public image. The house conflict is between House 4 (roots, privacy, and inner foundation) and House 9 (vision, belief, study, and wider horizons); pressure in one field tends to reactivate the other.