2 sentences

1. 他是那个富商的私生子。

   tā shì nà gè fù​shāng de sī​shēng​zǐ.

   He is the illegitimate son of that wealthy businessman.

   Source: Dong Chinese Dictionary

2. 他决定通过法律程序认领那个私生子。

   tā jué​dìng tōng​guò fǎ​lǜ chéng​xù rèn​lǐng nà gè sī​shēng​zǐ.

   He decided to legally recognize his illegitimate son.

   Source: Dong Chinese Dictionary