But seeing that they are friends, his sister is in love with Siu-bo, and with Siu-bo bluffing that he's strong enough to demolish the Emperor and his entire army if he wanted, the Emperor lets them go, declaring that Siu-bo has died and no longer exists as far as he's concerned. Siu-bo laughs afterward that the Emperor fell for his bluff.
Given their close bond, his sister is smitten with Siu-bo, and by pretending to be powerful enough to overthrow the Emperor and his army if he wished, the Emperor permits them to depart, declaring that Siu-bo has passed away and no longer exists in his perception. Following this, Siu-bo laughs, suggesting that the Emperor was deceived by his pretenses.