The Odaimoku in the center of the Mandala Gohonzon is manifesting the entity of the Original Buddha in our mind. As such, it contains all the Buddhas of the ten directions — the four cardinal points, the intersections between each, and the zenith and nadir. It also contains all the sentient beings of all the Dharma realms, the lands of those realms and, in fact, everything in them. In other words, everything is contained in and embraced by Namu Myoho Renge Kyo.