Actually, the Honorable Sir Tianqi could understand why only Martial Honors had been sent to block Gu Ruoyun's way. The answer was simple. Knowing the Gu girl's ego, she wouldn't even spare Martial Emperors a second glance no matter how many of them has appeared before her. There was no guarantee that she would be afraid.
However, it would be different with Martial Honors. Having so many in the vicinity would give the Gu girl something to worry about. Otherwise, she would not have sent the Dongfang family members away and stayed behind to face these people alone.
It's possible that Bai Xiangtian had realized this and enlisted the help of the rest of the Martial Honors to help deal with this girl.
However, Bai Xiangtian had miscalculated. He did not think that the Gu girl's ego would turn out to be above that of an average person's. She absolutely refused to serve the Immortal Realm even if it meant signing her own death warrant.
Boom!