When he was a child and visited what was his previous family in his past life, he mentioned his wife, but nothing much was said besides he was married in his last life.

And what he said is true. If it’s an hipothetical question, you don’t gain nothing giving a realistic answer, you have to answer with feelings.

If your partner asks you “Would you still love me if I were a worm?” you reply “I will always love you, no matter if you’re a worm, a bird or a plant, I’ll keep you right by my side and you’ll stay with me forever”.

If she asks you “would you peel an orange for me if I ask you?” you say “Yes, and even cut it the way you like it, it’s nothing.”

I think he will earn some money from this investment and then start trusting dojun with all his heart. Thats what he wants

It’s a bait, I’m guessing it will be built somewhere else and he may want to drain them of funds by buying lots of land to tie down their money temporarily, maybe to do a move that requires the opponents be immovilized.

Who knows. Never mentioned much in the novel.

in his past life he had a wife, it’s just a flashback to his life when he was under this guy