He renamed Xiao Yue as Xiang Lingyue, it's clear to anyone with half a brain - he's grooming Xiao Yue to be the successor of the Xiang Family.
Xiao Yue has no relation to his current wife.
His current wife will definitely see Xiao Yue as a thorn in her side, wishing with all her might to get rid of him sooner rather than later.
You can guard against robbers, day and night, but you can't always guard against a thief from within the family.
If, God forbid, he weren't careful and Xiao Yue got hurt, he wouldn't just be filled with lifelong regret, he wouldn't rest even in the grave.
However...
He glanced at Gu Junzhu, "You cheeky brat, your words are sweeter than your actions, but didn't Xiao Yue get hurt under your watch too?"
Thinking of Lingyue's injuries, a pang of heartache shot through Senior Master Xiang.
"That was unavoidable," Gu Junzhu shrugged, "I didn't expect your Brother Xiang to be so heartless, attacking an eight-year-old kid."
Senior Master Xiang: "..."