2 sentences

1. 他在1990年创办了这家公司。

   tā zài 1990​nián chuàng​bàn le zhè jiā gōng​sī.

   He founded this company in 1990.

   Source: Dong Chinese Dictionary

2. 我出生于1990年，当年发生了很多大事。

   wǒ chū​shēng yú 1990​nián, dàng​nián fā​shēng le hěn​duō dà​shì.

   I was born in 1990; many major events happened that year.

   Source: Dong Chinese Dictionary