Tian Yanzhen saw right through Qiao Yu; he's someone who is very good at enlightening himself or, put another way, very adept at reconciling with himself.
Yes, in the life he lived before the age of eleven, Qiao Yu's grandfather taught him through word and deed what kind of man he should be.
For example, to return virtue with virtue and to meet resentment with straightforwardness; to think thrice before acting but to act immediately once decided; that a man should take on a man's responsibilities while saving money is something women should consider, as men should focus on earning; and that a sense of responsibility should only be extended to worthy people and causes...
In short, there were quite a lot of teachings.
Fortunately, Qiao Yu had a good memory from a young age, otherwise, he wouldn't have been able to remember so much.