Formal:
* 谢谢您的聆听。 (Xièxie nín de líntīng.) - This is the most formal way to say it, literally meaning "Thank you for your listening."
* 感谢您的聆听。 (Gǎnxiè nín de líntīng.) - This is another formal option, meaning "Thank you for your listening."
Informal:
* 谢谢你的聆听。 (Xièxie nǐ de líntīng.) - This is a more informal way to say it, using "你" (nǐ) instead of "您" (nín).
* 谢谢。 (Xièxie.) - This is the most basic way to say "thank you," which can be used in many situations, including after someone has listened to you.
Even more informal:
* 谢谢啦。 (Xièxie la.) - This is a casual way to say "thank you."
You can also add a sentence or two after saying "thank you" to express your appreciation further. For example, you could say:
* 谢谢你的耐心聆听。 (Xièxie nǐ de nàixīn líntīng.) - Thank you for your patient listening.
* 很高兴你能认真听我说话。 (Hěn gāoxìng nǐ néng rènzhēn tīng wǒ shuōhuà.) - I am happy that you listened to me carefully.
The best way to choose the appropriate expression depends on the specific situation and your relationship with the listener.