“Any fool tries to cover it up and most fools do” (Dac Nhan Tam). Indeed, the defect does not exclude anyone, no one can boldly confess: I am perfect! Hiding ignorance - a phenomenon today that has been and is common in the majority of students, expressed through covering up their incompetence and ignorance. Weaknesses and incompetence mostly arise from the consciousness and ability of each person to rise and "hide ignorance" can make us sink deeper and deeper into the shell of false erudition. The acts of hiding ignorance created by ourselves, if we face reality and wave our hands away, thinking that no one will know, we will continue to live under the house of scholars. If unfortunately someone knows or points out that we resist, deny, blame the situation, not only will we not be able to rise up, but it will bring incalculable consequences, making our knowledge even more limited and powerful. Credit is degraded, trust in people is lost. Everyone knows the proud guy - hiding ignorance in "Three big chickens", he brought us relaxing laughter, but above all, it is a lesson for those who hide ignorance and an alarm bell. It allows us to avoid the situation of covering up our incompetence, our shortcomings, because “hiding our flaws will not make us better. My credibility increases if I honestly admit my flaws.”