3 sentences

1. 这个家传秘方从不向外传。

   zhè gè jiā​chuán mì​fāng cóng bù xiàng wài​chuán.

   This secret family recipe is never shared with outsiders.

   Source: Dong Chinese Dictionary

2. 这块家传的金牌成色十足，非常珍贵。

   zhè kuài jiā​chuán de jīn​pái chéng​sè shí​zú, fēi​cháng zhēn​guì.

   This heirloom gold medal is of high purity and is very precious.

   Source: Dong Chinese Dictionary

3. 他把家传的手表典当了以筹集医药费。

   tā bǎ jiā​chuán de shǒu​biǎo diǎn​dàng le yǐ chóu​jí yī​yào​fèi.

   He pawned his family heirloom watch to raise money for medical expenses.

   Source: Dong Chinese Dictionary