"How are you doing?" is the English translation for "你好吗".
The phrase "How are you doing?" is a common way to ask someone how they are feeling or what's going on in their life. It's a casual and friendly way to show interest in another person, and it can be used in both formal and informal settings.
To answer this question in Chinese, you would say "nǐ hǎo ma?", which literally translates to "are you good?" or "how are you?".
I hope that helps! Let me know if you have any other questions.
