After listening to Ares's words, Yang Chen's first thought was not suspicion because if Ares had truly taken the divine stone, he had no reason to fabricate such a lie. In fact, if Ares had really wanted to take the divine stone and avoid him, he wouldn't be able to find him. Although the innate true qi could help him defeat Ares, it couldn't help him track his whereabouts. Moreover, Ares's character was straightforward; he wouldn't go back on his word. If he said he would give up, he would definitely give up.
"What are the specific circumstances?" Yang Chen asked.
Seeing that Yang Chen didn't doubt him, Ares was first surprised, but then he seemed to find Yang Chen more pleasing to the eye and proceeded to explain the whole story.