Sun rules 3rd house is in 6th house in Scorpio

When the Sun is in the 6th house of Scorpio sign in a person's birth chart, it indicates that the individual is likely to have a dominant personality with a lot of energy, courage, and determination. They are likely to be hard-working, organized, and disciplined when it comes to their daily routine and work.

However, as Scorpio is a sign of secrecy and transformation, the Sun in the 6th house can also create a tendency for the individual to keep their true feelings and intentions hidden from others. The 6th house is also associated with health and well-being, so such individuals may be prone to health issues related to the reproductive organs or disorders of the blood.

Overall, this combination suggests that the person will be driven to achieve their goals and succeed in their career or work, but may need to guard against becoming too focused on their own desires or neglecting their own health and well-being.