《晋书·志·第十四章》
但自从元康以后，各傅有时二人有时三人，有时四人有时六人，到永康年间又不设置詹事。
然自元康之后，诸傅或二或三，或四或六，及永康中复不置詹事也。
But since after Yuan Kang, there were sometimes two, sometimes three, sometimes four, sometimes six protectors, and the Zhan Shi position was not set up again until Yong Kang.