Regarding Li Zhiqiang grandparent's opinion on their relationship, Jing Lihua could recall the specifics back from six years ago. They were not very happy about the arrangement. Back then, Jing Lihua was just a spoiled young mistress from a rich family.
There wasn't anything particularly impressive about her other than her looks...
Also at that time, she was young. She didn't know how to handle conversation and leave a favorable opinion of herself in others' minds. So she hadn't behaved how she should to stabilize the situation.
Due to all these factors, Li Zhiqiang's grandparents were hoping that Li Zhiqiang's affair with Jing Lihua would be the heat of the youth and he would leave her...
And then Jing Lihua disappearance...
And her marrying some other man...
After all this, it would require a miracle to get his grandparents to have a positive opinion of her; hence their approval of their relationship.