Thanks again to Master Lee for the clarification. Yes, I am referring to the poison arrow marked 'A" only.It is at the same height as the master bedroom. It is pointing directly at the master bedroom window. Good to hear it can be cured by day curtain. It is also good to hear it is not affecting my main door. iv>The shape of my house and the house at the opposite is different, therefore the poison arrow is not cancelling each other, if my understanding is correct. I will install the day curtain.v>Thanks again. you are very helpful.