Mrs. Qi looked at the front side, the reverse side of the word is very small, but also fell in the corner, at first glance looks more like a few ink spots.

It's only on closer inspection that I realize it's actually words too, very small.

It's a date.

The handwriting is a little old, and the only reason it was thought to be an ink spot was because not only was it small, but it had been so long that the ink spot had melted away a bit.

Mrs. Qi looked at the date in ...