Mercury rules 3rd and 6th house is in 7th house in Libra

Mercury is the planet of communication, intellect, and reasoning while the 7th house represents marriage, partnerships, and business collaborations. Libra is the sign of balance, harmony, and justice.

When Mercury is placed in the 7th house in Libra sign, it gives good intellectual and communication skills to the native which are very helpful in their social and professional relationships. The person is likely to be charming, persuasive, and diplomatic in their approach to others. They have a good sense of fairness and balance and can easily resolve conflicts and negotiate deals.

The individual with this placement may have a strong desire for partnerships and collaborations that are based on mutual trust and understanding. They may need intellectual stimulation from their partners and may look for someone who is well-educated or well-read.

However, this placement can also create some challenges. The native may be indecisive or unreliable at times, which can strain their relationships. They may also be prone to over-analyzing their partnerships, causing them to miss out on opportunities or create unnecessary tension.

Overall, this placement of Mercury in the 7th house in Libra sign can be very beneficial for the individual's social and professional relationships, as long as they learn to balance their communication and decision-making skills.