At risk of sounding like a snob, i find professor jiang's videos shallow at times, but it's because I understand the context of chinese culture, as well as the intended high-school audience of students... on a higher academic level it's more-so pseud-entertainment than dense work. His substack is based. His theory is precise. But the framing of videos aren't for Americans looking to create actionable change in the world. It's a starting ground, like high-school education if we had better teachers in public school and paid more attention, even if we did all of that there's still am intellectual ceiling and this one is high-school. The students who suffer most are those for whom school is the only source of explicit teaching they’ll ever get. Affluent families can buy tutors and support extra practice. Poor families cannot. Professor jiang excels however at his job, teaching high-school students. The unseen ceiling is Academia, is obtaining research grants to create changes.