"Master, I can't read! You can help me to see which is the box for "Bodhisattva fruit" Chen Tianming answers.

"illiterate? I remember that the characters used by ancient practitioners of the earth are the same as those used by practitioners. How can you not read? " The old man asked. With a wave of his hand, all the crystal boxes not far away floated. With a movement in his heart, a hexagonal crystal box flew into his hands.

Chen Tianming put all the remaining crystal boxes into the bracelet and looked at the crystal box in the hands of the old man.

the material of the crystal box is...