The first time Jiang Ningyu heard about Ling Wudu was from her roommate and best friend.
Cheng Wan: "Let me tell you, Ling Wutuan is brainless@~...-!."
Jiang Ningyu: "..."
Cheng Wan: "Oh, there is something wrong with him anyway. He keeps a dead look on his face day by day. He doesn't know what he is going to do when he suddenly turns around."
Jiang Ningyu: "Ah... Oh..."
Later, at Ling Wuduan's eighteenth birthday party,
Jiang Ningyu: "Look at you, you can eat cake on your face, just like a cat."
Ling Wuduan: "... If I were a cat, you would be my catnip... Can you understand what I mean? Jiang Ningyu."
Jiang Ningyu: "Well, I like you too!"
Intention: Isolated evidence does not stand up