Upon his death, the son must resign from office and live in a hut near the tomb, abstaining from wine, meat, and sexual intercourse for 25 months.  
Filial piety is often considered the most important tract of this religion.  A son must obey his father absolutely, not only as a child but until his father's death.  Upon his death, the son must resign from office and live in a hut near the tomb, abstaining from wine, meat, and sexual intercourse for 25 months.  Adherents are called  "ju," and may concurrently follow the Buddhist or Taoist faiths.  Laid out in six volumes said to have been produced by an Imperial decree, FTP, name this ancient "way of the sages," whose lack of a formal name led Westerners to mistakenly name it for its most prominent thinker.
Filial piety is often considered the most important tract of this religion.  
Confucianism