5 sentences

1. 处理人际关系也是一门学问。

   chǔ​lǐ rén​jì guān​xi yě shì yī mén xué​wèn.

   Handling interpersonal relationships is also a skill in itself.

   Source: Dong Chinese Dictionary

2. 他很擅长处理复杂的人际关系。

   tā hěn shàn​cháng chǔ​lǐ fù​zá de rén​jì guān​xi.

   He is very good at handling complex interpersonal relationships.

   Source: Dong Chinese Dictionary

3. 良好的人际关系对职业发展非常重要。

   liáng​hǎo de rén​jì guān​xi duì zhí​yè fā​zhǎn fēi​cháng zhòng​yào.

   Good interpersonal relationships are very important for career development.

   Source: Dong Chinese Dictionary

4. 他通过建立广泛的人际关系网来拓展业务。

   tā tōng​guò jiàn​lì guǎng​fàn de rén​jì guān​xi wǎng lái tuò​zhǎn yè​wù.

   He expanded his business by building an extensive personal network.

   Source: Dong Chinese Dictionary

5. 在处理人际关系时，我们要严于律己，宽以待人。

   zài chǔ​lǐ rén​jì guān​xi shí, wǒ​men yào yán​yú​lǜ​jǐ, kuān​yǐ​dài​rén.

   In handling interpersonal relationships, we should be strict with ourselves and lenient with others.

   Source: Dong Chinese Dictionary