Xia Huyou had opened his god’s aperture, so his absorption speed was not slow.
Wu Jia followed him, so she was not worried about being discovered by others.
It was to prevent her from following other recuperating students and absorbing willpower too quickly. If she was discovered to be unusual, it would also be troublesome.
As for Su Yu himself..
He wanted to see if there were any fellows from the single divine Wen faction who had just entered the sky. He could just follow those fellows. It wasn’t suitable for him to be too strong. Those who had just entered the sky would definitely not be able to absorb willpower as fast as him.
Moreover, he could even cover up some abnormalities!
As for the other party’s feeling that something was amiss... it wasn’t up to you. You absorbed it yourself, yet you insist on saying that Su Yu absorbed it. Are you trying to slander me?