content: and after no more time had elapsed than it takes to eat a meal he was back again and said : " the dog is dead , and there is nothing further to hinder us ! " at midnight they wrapped themselves in dark silk , and the old man carried the youth over the tenfold walls which surrounded the palace . they reached the third gateway and the gate stood ajar . then they saw the glow of a little lamp , and heard rose - red sigh deeply . the entire court was silent and deserted . the youth raised the curtain and stepped into the room . long and searchingly rose - red looked at him , then seized his hand . " i knew that you were intelligent , and would understand my sign language . but what magic power have you at your disposal , that you were able to get here ? "
answer: he understood her sign language .
question: why did rose-red believe that tsui was intelligent ?
target: why did rose-red believe that tsui was intelligent ?
references: why did rose-red believe that tsui was intelligent ?