But these people were all relatively weak.
If they were to be used to fight against Fei Yang Kingdom, they would amount to nothing more than cannon fodder.
Thus Heavenly General Sang didn't care about the battle at the south. Unless Long Qian Xing managed to come close to the large river and then crossed it towards their territory more, then Heavenly General Sang would choose to ignore the south.
Anyway, there were more than enough people who could be appointed to take care of him and the few other weaker forces there.
As for the second reason he gave out…
It was also partially true.
Heavenly General Sang was no longer a young man who could vigorously waved his fist tirelessly on the battlefield. He was already old and his health was declining due to his no longer healthy body function.
Even though so, Heavenly General Sang was not really a person who liked to stay quiet and do nothing.