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Criticism also has its nuances; it's not just about randomly pointing out faults and going on a tirade. That's not critique; that's simply venting dissatisfaction, no different from pulling over a random passerby and asking for their opinion on the strengths and weaknesses.
As a professional video uploader, one needs to demonstrate expertise. Xu Qing was very professional and well aware that critique must be quick, accurate, and ruthless:
Quickness means speaking fast, not dragging out each word like a slow narration while finding faults. When speaking quickly, one must also articulate clearly, providing a sense of exhilaration.
Accuracy means hitting the nail on the head. You cannot nitpick over trivial matters or randomly spray criticism wherever you see fit without substantiation. Your points must have merit and stand on solid ground.
