Elder Yang cursed Chu Feng as scrap metal and mocked Elder Shoumei for accepting a piece of trash as a disciple. He also deliberately flaunted his own 'Supreme Genius' disciple, Shangguan Bei, either knowingly or unknowingly.
"A student reflects his master! A brilliant teacher produces great students!"
"Conversely, a not-so-brilliant master will inevitably teach trash disciples."
Boasting as the Ten Thousand Sword Sect's number-one genius, and with Elder Yang watching over him, Shangguan Bei even had the audacity to mock Elder Shoumei right to his face with a tone of ridicule.
It was a blatant lack of respect for his elders and superiors.
However, Shangguan Bei had his reasons for being so presumptuous because he was decreed by the Sect Master through Sword Intent to be a Supreme Genius worthy of protection, the hope for the prosperity of the Ten Thousand Sword Sect.
That's why he dared to be so rampant, speaking insolently to a venerable elder.