The great bodhisattvas who have emerged from the ground go up to the sky and bow before the great stupa with the two Buddhas seated side by side. Then they return to the ground, go around and greet each of the emanation Buddhas one by one, after which the Bodhisattvas return to the sky. This activity takes a great deal of time, fifty kalpas we are told, and yet the time only seemed to be no more than half a day to those who witnessed it due to the great power of the Buddha. Notice here that these Bodhisattvas had complete freedom of movement, they could go up to the sky, they could return to the ground and travel about, and they could then again return to the sky. This is in sharp contrast to the members of the original assembly who had to be raised up by the power of the Buddha.
These Bodhisattvas from beneath the ground not only have the marks and characteristics of the Buddha, they also have the powers of the Buddha.
Lecture on the Lotus Sutra