2 sentences for 主子 (zhǔ​zi)

1. 他虽然是个地位低微的仆人，但对主子十分忠诚。

   tā suī​rán shì gè dì​wèi dī​wēi de pú​rén, dàn duì zhǔ​zi shí​fēn zhōng​chéng.

   Although he was a lowly servant, he was very loyal to his master.

   Source: Dong Chinese Dictionary

2. 那个忠诚的仆人为了保护主子，不惜牺牲自己的生命。

   nà​ge zhōng​chéng de pú​rén wèi​le bǎo​hù zhǔ​zi, bù​xī xī​shēng zì​jǐ de shēng​mìng.

   That loyal servant did not hesitate to sacrifice his own life to protect his master.

   Source: Dong Chinese Dictionary