2 sentences for 陈年 (chén​nián — longstanding)

1. 不要再提那些陈年往事了。

   bù yào zài tí nà​xiē chén​nián wǎng​shì le.

   Stop bringing up those old stories from the past.

   Source: Dong Chinese Dictionary

2. 这只是我找到的一件陈年旧物。

   zhè zhǐ shì wǒ zhǎo​dào de yī jiàn chén​nián jiù​wù.

   It's just an old thing I found.

   Source: OpenSubtitles