Wu Qi Yao wanted to say that there is no chance for you to get a piece of treasure anyway so what are you excited about? But he was afraid of upsetting her, stabbing her where it hurt the most, so he swallowed back all the words that were on the tip of his tongue.
He had been out on an experience journey with Wu Xiao Dao before, it seemed that it was to test her destiny, and Hades took them to a treasured land. In the end, as Hades said, everyone else got some treasures, but she was the only one who returned empty-handed.
To be exact, she didn't return empty-handed. She brought back a rusty dagger, which was completely useless. She also insisted that Wu Qi Yao to polish it for her. Wu Qi Yao didn't dare tell her that the dagger broke in two when it was being sharpened, and what he gave her was made by himself.
So, now when Wu Xiao Dao talks about treasures, he will think of her destiny. Alas she doesn't seem to care about it...
