1. Mercury is the closest planet to the Sun, it always rises and sets just before or after the Sunrise and Sunset. This period is called twilight aka "Sandhi - the meeting time of day and night".
If you have a strong Mercury it means a lot of interactions, meetings, communications, friendships.
2. Mercury rules the Number 5.
If you have strong Mercury it means Number 5 can be lucky for you.
3. Mercury is surprising and funny. Hasta nakshatra, the funniest among nakshatras is in the heart of Mercury's exaltation sign (Virgo). Similarly the second most funniest, Revati nakshatra is ruled by Mercury but its debilitated there.
If you have strong Mercury it means you're surprising and funny. Comedy is one of the ways to cool you down.
4. Icy caps on the polar region of the planet Mercury is a mystery. Likewise Mercury rules the final nakshatra of all water signs (Cancer Scorpio and Pisces), hence we can say its not only surprising but holds untold mysteries.
If you have strong Mercury it means deep secrets and more water storage (in the body).
5. Mercury is hot and it rules your skin.
If you have strong Mercury it means you'll have dry skin.