Tang Mo indeed had no intention to eliminate Ying Duo; he genuinely prepared a mansion in Chang'an for his father-in-law. Moreover, the mansion was constructed with considerable elegance, roughly similar in scale to the Duke of Egret's residence, and the interior was equally luxurious.
"You might want to take a look at the house I built for your father; it looks quite nice. You can give some advice to the officials in charge, and it counts as spending some time, finding something to do for yourself." Tang Mo suggested to Ying Yue while savoring a delicious meal.
Ying Yue's mood visibly improved a lot, which stemmed from multiple aspects: For one, Emperor Tang Mo being willing to see her was in itself an indication of her importance in the Emperor's mind; secondly, Tang Mo's attitude was great, even if he was acting, Ying Yue was genuinely grateful; lastly, the promises Tang Mo made to her were substantial enough, essentially securing the future of the Ying family.