Can I smash the wall under the kitchen window B, and what procedures do I need to do if I want to do

As long as it's not a load-bearing wall, it's generally no problem to smash it, and it's not load-bearing at all under the window, so you can smash it.

The wall under the window is definitely not a load-bearing wall, but it is difficult to say on both sides, so if you just remove the one under the window, you can remove it by reporting it to the property.

Secondly, if the property is not allowed when it is reported, then it will be demolished directly.

Third, if the piece outside your window is not your property right, be careful about the property and the city management when using it.

You don't have to look for anything if it doesn't affect the overall shape, and if you go to a department, they won't let you smash it.

It should be okay, as long as it is not a load-bearing wall, there will generally be no problems, and after smashing, it must be waterproof.

I don't dare to tell you, it's best to go to the property and ask if this is a load-bearing wall. In general, the location of the window is possible to hit. It is recommended to find someone from the decoration company to help you fight, and you don't have to fight yourself.

It can be smashed completely, because even if it is not a load-bearing wall, it can be demolished.

It's not a load-bearing wall, you can smash it.

See if it is a load-bearing wall, it should not be, ask the property, if not, it can be smashed.

I don't dare to say this, it depends on how your house is designed, which two walls the main body is on, which is not sure how to smash, what if it is broken?

Doors and windows are right, smash them decisively. What age is it still using the design concept of 2000