What are you doing

In the end, Lin Yu who had something that he needed to do stayed behind, Su Wan tried to ask him what he wanted to do but he just casually shrugged and said, " Oh nothing just a bit of this and that, nothing more." 

Something about him being this vague made her frown but she didn't say anything, the day was getting hotter and she wanted to finish dealing with everything that she has planned before coming back home and then taking a nice little break. 

Behind her back, Lin Chen gave Lin Yu a good look as if telling him to take proper care of the matter that they have planned.  " We will be back soon Ah Yu, take care of yourself."