3 sentences

1. 她是一位自强自立的女子。

   tā shì yī wèi zì​qiáng zì​lì de nǚ​zǐ.

   She is a self-reliant and independent woman.

   Source: Dong Chinese Dictionary

2. 一个人应当自强，不断进取。

   yī gè rén yīng​dāng zì​qiáng, bù​duàn jìn​qǔ.

   A person should strive for self-improvement and constant progress.

   Source: Dong Chinese Dictionary

3. 吾辈当自强。

   wú bèi dāng zì​qiáng.

   Our generation should strive for self-improvement.

   Source: Dong Chinese Dictionary