Day 20 completes Chapter 15, The Appearance of Bodhisattvas from Underground, and concludes the Fifth Volume of the Sutra of the Lotus Flower of the Wonderful Dharma.
Thereupon the World-Honored One praised the leading great Bodhisattvas, saying, “Excellent, excellent, good men! [l am glad that] you rejoice at seeing me.”
Thereupon Maitreya Bodhisattva and the [other] Bodhisattvas [who had already been present in the congregation before the arrival of the Bodhisattvas from underground], eight thousand times as many as the sands of the River Ganges in number, thought:
‘We have never before seen these great Bodhisattva-mahāsattvas who sprang up from underground, stood before [Śākyamuni,] the World-Honored One, joined their hands together towards him, and made offerings to him. [Now we see that their leaders] inquire after him.’
See The Vow of the Bodhisattvas Who Sprang Up from Underground