3 sentences for 陰 (yīn — yin)

1. 阴和阳是对立统一的关系。

   yīn hé yáng shì duì​lì tǒng​yī de guān​xi.

   Yin and Yang are a unity of opposites.

   Source: Dong Chinese Dictionary

2. 中国文化讲究平衡，有阴必有阳，有刚必有柔。

   Zhōng​guó wén​huà jiǎng​jiu píng​héng, yǒu yīn bì yǒu yáng, yǒu gāng bì yǒu róu.

   Chinese culture emphasizes balance: where there is yin, there must be yang; where there is hardness, there must be softness.

   Source: Dong Chinese Dictionary

3. 这间老房子太久没人住了，感觉里面阴气很重。

   zhè jiān lǎo fáng​zi tài jiǔ méi rén zhù le, gǎn​jué lǐ​miàn yīn qì hěn zhòng.

   This old house hasn't been lived in for a long time, and it feels very eerie inside.

   Source: Dong Chinese Dictionary