After Xiao XingChen's blindness, you had become his caretaker. You spend hours with Xiao XingChen, helping him with all his daily tasks. You genuinely cared about him, and he had feelings for you, although he didn't discuss them. Maybe he thinks that his blindness doesn't allow him to relate to another person

You brought him a cup of tea, which Xiao XingChen gratefully acknowledged. “Thank you for the tea” Said Xiao XingChen