Su Ming did not harbor a deep grudge against Shamans' Great Patriarch.
It did not matter whether it was his previous life or his current life, there was no hate to be spoken about between them. The only thing even remotely important that happened between them was their meeting during the battle between the Shamans and Berserkers.
Su Ming had not expected this battle to end this way, but there was also no reason why he should not let it end this way.
It was especially so since he saw a similar presence to his own within the Great Patriarch. It was the struggle of trying to move from death to life. His was the Life of Nine Deaths, but trying to gain success in this path and trying to fuse with a Life that was given by someone else was very difficult.