Jianzhen studied the Dharmaguptaka Vinaya and Tiantai. However, the contents of his bodhisattva precepts are not known clearly. Therefore, I studied Jianzhen and his circumstances. All his teachers, Wengang, Daoan and Hongjin, bestowed bodhisattva precepts on emperors as the teacher of the bodhisattva precepts. Jianzhen received the bodhisattva precepts at the age of eighteen, but this did not match with the rules of the Yoga precepts. Therefore, there was a high possibility that the precepts of the Fanwang-jing were bestowed on him. In addition to this, according to the Song Gaosngzhuan, there were some cases in which Dharmaguptaka monks received bodhisattva precepts of esoteric Buddhism, so the bestowals and receipts of the bodhisattva precepts did not necessarily follow sectarian lines.
The general public received the bodhisattva precepts with a high regard for religious good deeds through the ritual of precepts bestowal from an eminent preceptor. And monks loosely accepted the bodhisattva precepts without regard for school.
Jianzhen conveyed such bodhisattva precepts to Japan. Jianzhen bestowed the bodhisattva precepts from the Fanwang-jing, which were also bestowed on him, on both monks and laypeople.