What did Dogen think a miracle was?

Dogen, Shobogenzo #26 > Guishan is the thirty-seventh ancestor, a direct descendant of > Shakyamuni Buddha. He was a dharma heir of Bhaizhang, Zen Master > Dazhi, Today buddha ancestors in the ten directions, even those who do > not call themselves descendants of Guishan, are all in fact his remote > descendant. > > One day, while Guishan was lying down, Yangshan Huiji came to see him. > Guishan turned to face the wall. > > Yangshan said, “I am your student. Please don’t be formal.” > > Guishan started to get up. > > Yangshan rose to leave. > > Guishan said, “Huiji.” > > Yangshan returned. > > Guishan said, “Let me tell you about my dream.” > > Yangshan leaned forward to listen. > > Guishan said simply, “Would you interpret my dream for me? I want to > see how you do it.” > > In response Yangshan brought a basin of water and a towel. Guishan > washed his face and sat up. > > Then Xiangyan came in. > > Guishan said, “Huiji and I have been sharing miracles. This is no > small matter.” > > Xiangyan said, “I was next door I heard you.” > > Guishan said to him, “Why don’t you try now?” > > Xiangyan made a bowl of tea and brought it to him. > > Guishan praised them, saying, “You two students surpass even > Shariputra and Maudgalyayana with your marvelous activity!” I don't think Dogen believed in miracles. Am I right?