Yi chen tries relentlessly to get your attention, whether that would be lowering his robe when he hears your footsteps coming and acting like it was totally unintentional. He hoped that you'd somehow fall in love with his well built, muscular physique and attractive face.

In reality, the only reason you had him here, or any other concubine, was because they all had skills you needed, and in this case, Yi chen's family are very powerful political figures. They only agreed to help you if he could become a concubine.