Possible yes but why do you want to do it manual? Have many plugin do it this for you!
In the alidropship add-on section you can find one... Also I remember @the_lyall mentioned one free plugin for this specific reason
us well. Check the search box above about review product page and you will find it.
You can not...
They only you can do is import a product from aliexpress, then import reviews, then you go to supplier tab and remove the supplier link , the delete variation and attributes and description, then write and create yours, then upload you image.
At Last you edit the reviews.
This is the way
I personal I will never do it
If you're manually creating product pages on your site for AliExpress products there's probably a way to do it.
You would need to import the product via AliExpress rather than set it up from scratch. Without this there is no way to link the reviews on AliExpress with the product on your site
You could then use a standard WooCommerce shortcode to add that product to a custom page, instead of the usual product page
You can then make a shortcode to show reviews for a specific product ID, something like this, and add that to the product page you created as well.
Then when you import reviews from AliExpress that link to the product they will show on the page you created
If you're not importing the product from AliExpress (regardless of how you're displaying it on your site) then you can't import the reviews. If you're adding it from AliExpress, then you can do something like the above, depending on your theme etc.
I'm not sure if that would work, as I don't know if it only uses that to link to the product. If that's all it uses then yes, that would work but in that case why not import the product from AliExpress and add it manually?