Actually, while Luyun was chatting with Shen Jingyi just now, he had already sensed the presence of Liu Yan'er.
First, because of the Thought Magic Array; Liu Yan'er carried the Peace Talisman that Luyun had given her. At a long distance, she needed to call Luyun's name for it to work, but at close range, Luyun could sense the existence of the Thought Magic Array at any time.
Second, because the true qi inside Liu Yan'er's body came from the exact same source as Luyun's. In other words, that was a seed Luyun had sown, so of course he could easily sense her presence.
Chapter 63