Tang Wan, a mystical species.
Before Da Ming was Yuan, and before Yuan was Song, and before Song, it was Tang.
This statement is meaningless; it's just Zhou Li playing with a cliché himself. In reality, Tang Wan was vital to Zhou Li's plan; indeed, without Tang Wan, the whole plan was utterly unworkable.
Zhou Li targeted Tang Wan's "trait."
Tang Wan was a rather mystical person. In terms of strength, she couldn't even surpass Zhou Li, let alone Daoist priests and Jiang Li. But to say she was useless would also be unreasonable because Tang Wan possessed a trait that no one else had.
She was very accommodating.
Of course, this wasn't about her accommodating personality; if you were to ask the students of Beiliang Academy whether Tang Wan was an accommodating person, their intelligence must be somewhat questionable.
Their sanity might also be questionable.
