questions about paper equation

[LuckyOne09]

Hi, thank you for your excellent work, but I have some questions regarding the derivation of an equation in the paper.

Thank you for your time and assistance. I appreciate your willingness to help me better understand your work.

[liruilong940607]

Hi yeah we omit some details in the paper, which we provide here:

[LuckyOne09]

Wow, thank you for your so quick and detailed explanation. I can understand now and I am amazed that you could come up with such a clever deduction.