How Do the Marks of Arising and Ceasing of the Six Consciousnesses Appear?

From the perspective of marks, the first six consciousnesses constantly arise, cease, and change. Even during the daytime when everything seems quite normal, they continually arise on one dharma and cease on another dharma, then cease on this dharma and arise on yet another dharma. The nature of the six consciousnesses is just this constant arising and ceasing, fundamentally unsettled. Why do the six consciousnesses arise and cease on various dharmas? It is caused by the fluctuation of the manas's thinking, the constant shifting of the manas's grasping tendency, and the manas's lack of settledness. If the manas is subdued and the mind is not scattered, the manas's thoughts will no longer jump about ceaselessly; they will settle on one or a few dharmas, and the six consciousnesses will likewise not be scattered—they will not arise everywhere to perceive and discern, nor jump from place to place.