When he said it , Sanzo knew that that was right . Somehow , he was remembering something , something important , something vital . Hakkai blinked at him . " What do you mean ? "

Question: Why is Hakkai so apoplectic with Sanzo ?
Answer: They are pleased with what Sanzo said .They are surprised by what Sanzo said .They are happy with what Sanzo said .They are familiar with what Sanzo said .