What really got Zhao Bing excited was that despite his sexual disease rendering him unable to get hard, his member suddenly stood erect this time. Zhao Bing realized in amazement that this was an unprecedented level of hardness!
After feeling utterly humiliated, Zhao Bing no longer felt as angry as before, but instead was filled with excitement and even an immense anticipation for what was to come.
In Zhao Bing's mind, he had long concluded that his wife was cheating on him with his younger brother, so now that things had come this far, there was nothing more to ponder. He very calmly accepted everything, even growing fond of the feeling of being cuckolded by his wife.
The humiliation brought him an unprecedented sense of thrill, even more intensely arousing desire and passion than before. Pain followed by pleasure, that was an eternal truth.