Even though Orange Star Emissary swore to the gods and claimed that she would not reveal Zhang Ruochen's identity, Zhang Ruochen understood that letting her return to the Black Market would be risky.
Of course, Zhang Ruochen had his own ideas.
The worst case scenario was Orange Star Emissary spreading the news that Zhang Ruochen, the Time and Space Descendant, was not dead. But if he did not show himself, how many people would trust her unsubstantiated words?
People were more willing to believe Wan Zhaoyi than a siren from the Black Market. After all, Wan Zhaoyi did witness the Nine Serenity Sword Saint killing Zhang Ruochen.
Was Wan Zhaoyi more credible or Orange Star Emissary?
Therefore, even the worst case would not be much of a loss to Zhang Ruochen.