2 sentences

1. 别看他长得像个小白，其实他很有骨气。

   bié kàn tā zhǎng de xiàng gè xiǎo​bái, qí​shí tā hěn yǒu gǔ​qì.

   Don't be fooled by his delicate looks; he actually has a lot of backbone.

   Source: Dong Chinese Dictionary

2. 他是一个很有骨气的人，绝不会为了利益而放弃原则。

   tā shì yī gè hěn yǒu gǔ​qì de rén, jué bù huì wèi​le lì​yì ér fàng​qì yuán​zé.

   He is a man of high integrity and will never abandon his principles for personal gain.

   Source: Dong Chinese Dictionary