ROKUSHIKI ACTUALLY HAKI POWER- Yaps, - Mugiwara Dangers

Chapter Discussion - Rokushiki is based on Haki, Page 7

How strong would Nico Robin be if she had Haki but also Rokushiki techniques? - Quora

HAKI, Wiki

How strong would Nico Robin be if she had Haki but also Rokushiki techniques? - Quora

Chapter Discussion - Rokushiki is based on Haki, Page 7

How strong would Nico Robin be if she had Haki but also Rokushiki techniques? - Quora

Rokushiki is based on physical strength is actually based on a mistranslation in earlier One Piece volumes : r/OnePiece

How strong would Nico Robin be if she had Haki but also Rokushiki techniques? - Quora

Honestly Oda probably should have just expanded on Rokushiki instead of creating Haki. He could have definitely made it to where there are techniques that allow you to hit logias and armament