Mercury rules 5th and 8th house is in 5th house in Gemini

When Mercury is placed in the 5th house of a person's horoscope, it is called Buddhaditya Yoga. This combination brings extraordinary intellect and sharp wit to the native. Since Gemini is the natural ruler of the 3rd house, which represents communication, thinking process, younger siblings, and short journeys, a person with this placement tends to be very communicative and have quick thinking.

This placement often signifies a person who possesses excellent communication skills, a good sense of humor, and enjoys creative pursuits. The fifth house rules creativity, romance, and children. Hence, the native may have a strong inclination towards creative fields like writing, acting, or any other artistic pursuit.

Additionally, this placement signifies a strong desire to learn new things, especially in matters of romance and love. Such natives may have a lot of love affairs or intimate relationships in their life. However, they need to be careful while choosing and maintaining their relationships.

Overall, this combination brings positive results to the native's life. They have a good analytical mind and excellent analytical capabilities. But, they need to be cautious while communicating with others, as sometimes they may unwittingly offend others with their sharp wit or sarcasm.