His theory centers around the "Zhu Zi Jia Li" (Zhu Zi's Family Rites), prioritizing in particular the rites on the occasions of funeral and sacrifice.

其礼学以《朱子家礼》为中心，尤其重视丧礼和祭礼；

youdao

For a long time your service has demanded a particular kind of sacrifice.

WHITEHOUSE: President Obama Signs Repeal of Don��t Ask, Don��t Tell

They regard it as unacceptable that scientists should "sacrifice" an embryo, which has the potential for human life, merely to harvest particular cells.

BBC: UK to 'approve therapeutic cloning'