C254 An old man

This little bookkeeper was indeed clever. Although he didn't say anything, Yan Ling knew what this little thing wanted. He took out a few coins from his sleeve and tossed it to the little bookkeeper.

When the errand boy saw this, he revealed a sweet smile and then led Yan Ling in the direction of the medical book.

As for Ling Tian, he passed through many long bookshelves