Eyes, lacrimal groove and facial characters

Many years later, I didn't care about the tattoo on the ferret's face until I accidentally saw the word "decree tattoo" in my fellow travelers. I didn't know what it was called at first, but it was definitely not a decree pattern. After investigation, I realized that it was called eight-character pattern, and the name was different. The position of the pattern on the ferret's face was called tear groove pattern.