He tries to learn braille and some of the books have audio options, that's how he reads.

"I see...you should try reading books with me sometime." He offered. "When I was in the kitchen, I remembered you cooked in the past."

Eventually, he rose, taking his leave to do errands. He felt much better talking to him and earning A-Qing's peace for her sake too, and for the both of them.

Before taking his leave, "If you need to talk, you can talk to me. I am here."