Eight Prohibitions

Eight Prohibitions,also called batiaozhijiao (八條之敎) or batiaofa (八條法) is a criminal law. When Shang people migrated to the Korean peninsula and established Gija Joseon, Saint politician Jizi from the Shang dynasty enacted this law to educate and strength the Korean people. This law was made up of eight prohibitions regarding etiquette, agriculture, rice farming, sericulture and weaving.
Contents.
Although not all of the 8 prohibitions are known, the known part is as follows.
Relationship between Nobi and Eight prohibitions.
Korea's Nobi system was originated from eight prohibitions. Eight prohibitions prescribed that if someone steal something from others he/she will be enslaved. If that person is man, he will be No (Hanja: 奴) and if it's woman, she will called as Bi (Hanja: 婢). It means that the Nobi is an uncivilized person who violated the eight prohibitions and Yangban is the law-abiding civilized person. Therefore, it is the reason that Yanbang enslaved Korean as thought of the saints Jizi's purpose to educate them.