Before dawn, Ning Qingzhi read all twelve notebooks.
She listed all the items related to Zhou He on a piece of paper - four in total. In addition to the ones she found before, she discovered another hidden clue in the last few pages of book eleven.
That was a seemingly unrelated passage written by Master——
"Last autumn, I received a letter from an old friend. He said that he had met a teacher named Zhou in Huainan. He had an ordinary face and was missing a section of his left ring finger. He was a good teacher and the children all liked him."
The ring finger of my left hand is missing.
If this teacher named Zhou is Zhou He - then he is in Huainan.
But which year was "last autumn"? The time when Master wrote the eleventh notebook is uncertain. Judging from the context and handwriting, it was probably around the fifteenth year of Jing'an - that is, five years ago.
Five years ago in Huainan.
Whether it's still there now - hard to say.
But this is a starting point.