Hello! My name is*****
I see you have been trying to change the language of the router interface from Chinese to English. Based on the picture you attached, your TP-LINK router model is TD-W89841N - hardware version V5.0.
I have checked that model and found out that it is being sold only in China, and for that reason, there is no other language available other than Chinese.
The previous Expert sent you a link for English firmware, but that applies to another model - TD-W8961ND, so that is why you got an error message when trying to upload it.
So, all the firmware versions for TD-W89841N are in Chinese. See this link:
Since TP-LINK hasn't provided firmware in other languages, other than Chinese, unfortunately, I don't think there is a way to change the language to English for that router model. However, you can contact their technical support and ask them yourself.
You can send an e-mail to *****@******.***
I am sorry if I wasn't much of an assistance. If there is anything else I can help you with, let me know.