HSK 4
性
xìng后缀
nature; character; property; quality
这种材料有很强的安全性。
Zhè zhǒng cái liào yǒu hěn qiáng de ān quán xìng.
This material has a high degree of safety.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
New in the HSK 3.0 word list at level 4.