What does it mean that mercury falls in Scorpio?

Mercury falls in Scorpio? Scorpio (∑ κ ορ π ι? )

I only know that Scorpio is the eighth house of the zodiac, and it is the fixed position of Scorpio. It stands for "regenerative ability". What you get from others (whether tangible or intangible) shows a person's inheritance, insurance, trust, taxes and dowry. Since the main star of Scorpio is Pluto, the eighth house also represents a person's attitude towards death and mystery. In astrology, it stands for "debt palace".