"Aida Kang, open the door. Don't you want me? I'm easy to get. You can have me once you open the door."
Star Moon's shout was ignored by Aida Kang, and also by Ji Xinghe.
The former was simple. Even if you killed Aida Kang, he wouldn't believe Star Moon would join the Empire so frivolously. Even if Star Moon's relationship with Ji Xinghe wasn't great, or she harbored disloyalty like hers to the Martial Emperor III, she wouldn't defect at such a time and in such a manner.
The latter was even simpler because Ji Xinghe couldn't move since the ninety Marquis Mechas left Base Six.
The thought that flashed in Aida Kang's mind when Wu Chen opened the door was actually the correct answer: Ji Xinghe was indeed involved. The Ji Xinghe in the negotiation meeting was indeed an impersonation by Star Moon.
Only Ji Xinghe, Star Moon, Shen Mu, and Ji Rongxinyue knew how Ji Xinghe got there, so no one else could have guessed that Ji Xinghe truly arrived.