Bedding his mother on a flower bed (R18)

There seemed to be a sort of mattress underneath, and her look turned coquettish and seductive; a blush coated her cheek. After putting her own bed, Han Li calmly unentangled himself from her hand and looked down at her, his face filled with complex emotions. 

It was a red bed full of flowers and on top of it was his Mother. She laid there, her face a fair tan, her brownish black eyes filled with seductive intent and her cheeks flushed and hands open. Her black hair was spread across the mattress, and her tattered, servant-looking robe was slightly damp from sweat. 

With one leg, graceful as an enchantress, languidly perched over the bed's edge, she seemed to await the arrival of him—the other half to her whispered yearnings. Waiting for him to enter her spread thighs before she could close it around his waist.