不要紧
Meanings
1. unimportant
2. not serious
3. it doesn't matter
4. never mind
5. it looks all right, but
Characters used
Examples2
稍微 冷 点 儿 不要紧。
I don't care if it's a bit cold.
脸色 这么 差 不要紧 吗? 要 不 还是 去 一 趟 医院 比较 好 吧?
Your face looks pale. Are you OK? Maybe it would be better if you went to the hospital, don't you think?