2 sentences for 祭 (jì — sacrifice)

1. 祭礼中由孙辈充当尸以受祭。

   jì​lǐ zhōng yóu sūn​bèi chōng​dāng shī yǐ shòu jì.

   In sacrificial rites, a grandchild would act as the 'corpse' (personator of the deceased) to receive offerings.

   Source: Dong Chinese Dictionary

2. 每逢重要节日，村里的老人都会聚在一起祭祖。

   měi féng zhòng​yào jié​rì, cūn​lǐ de lǎo​rén dōu huì jù zài​yī​qǐ jì zǔ.

   On every important festival, the elders in the village gather to worship their ancestors.

   Source: Dong Chinese Dictionary