The reason is quite simple.
Because he trusts Lin Xi.
As a designer, Lin Xi would never stoop to stealing someone else's designs.
Especially not on such an important occasion.
Once exposed, it would not only be a disgrace for her but also bring shame upon the nation.
But Yiyang Group is different; they built their fortunes by pirating Yimena's designs, with a history of past offenses.
This conclusion can be drawn from everyone's reactions at the event earlier.
Had their designs not been stolen, they certainly would not have lost control, almost being expelled from the venue at such a critical moment.
After seeing that piece from Yiyang Group earlier, he thought Yiyang had finally claimed some dignity.
But now it seems…
It's too late to say anything now.
After all, Su Chen understands the need to consider the bigger picture.
He couldn't possibly expose the Yiyang Group.
Because that would be to disgrace the nation.