Yes, it's regret.
The emotions of the two brothers were complex. After exchanging a glance, they seemed to understand each other's thoughts.
"You... how did you become like this." After a long silence, Nan Hong transmitted a message, and his words fell into Su Han's ears.
"Su Baliu, my brother and I should hate you. On that day at Disciple Mountain of One Slash Palace, you made us lose face completely!"
Nan Hong continued, "We even almost died at your hands. At that time, I wished I could cut you into pieces."
"I used to imagine that someday when you fall into such a situation, whether it was by my hand or not, I'd pour oil on your fire, just to quench my anger!"
"But today... you truly are in such a state, and yet, I can't seem to hate you."